80747646 has 16 divisors (see below), whose sum is σ = 184566144. Its totient is φ = 23070744.

The previous prime is 80747627. The next prime is 80747647. The reversal of 80747646 is 64674708.

It is a super-4 number, since 4×80747646⁴ (a number of 33 digits) contains 4444 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42), and also a Moran number because the ratio is a prime number: 1922563 = 80747646 / (8 + 0 + 7 + 4 + 7 + 6 + 4 + 6).

It is a junction number, because it is equal to n+sod(n) for n = 80747598 and 80747607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80747647) 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 7 ways as a sum of consecutive naturals, for example, 961240 + ... + 961323.

It is an arithmetic number, because the mean of its divisors is an integer number (11535384).

Almost surely, 2^80747646 is an apocalyptic number.

80747646 is an abundant number, since it is smaller than the sum of its proper divisors (103818498).

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

80747646 is a wasteful number, since it uses less digits than its factorization.

80747646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1922575.

The product of its (nonzero) digits is 225792, while the sum is 42.

The square root of 80747646 is about 8985.9693967874. The cubic root of 80747646 is about 432.2250734735.

The spelling of 80747646 in words is "eighty million, seven hundred forty-seven thousand, six hundred forty-six".