80636472 has 160 divisors (see below), whose sum is σ = 267458400. Its totient is φ = 22208256.

The previous prime is 80636467. The next prime is 80636477. The reversal of 80636472 is 27463608.

80636472 is a `hidden beast` number, since 8 + 0 + 6 + 3 + 647 + 2 = 666.

It is an interprime number because it is at equal distance from previous prime (80636467) and next prime (80636477).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80636477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 131238 + ... + 131850.

It is an arithmetic number, because the mean of its divisors is an integer number (1671615).

Almost surely, 2^80636472 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 80636472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (133729200).

80636472 is an abundant number, since it is smaller than the sum of its proper divisors (186821928).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

80636472 is a wasteful number, since it uses less digits than its factorization.

80636472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 667 (or 654 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 36.

The square root of 80636472 is about 8979.7812890961. The cubic root of 80636472 is about 432.0266187302.

It can be divided in two parts, 8063 and 6472, that added together give a triangular number (14535 = T₁₇₀).

The spelling of 80636472 in words is "eighty million, six hundred thirty-six thousand, four hundred seventy-two".