80623647 has 24 divisors (see below), whose sum is σ = 129344400. Its totient is φ = 49611744.

The previous prime is 80623619. The next prime is 80623649. The reversal of 80623647 is 74632608.

80623647 is a `hidden beast` number, since 8 + 0 + 6 + 2 + 3 + 647 = 666.

It is not a de Polignac number, because 80623647 - 2¹⁶ = 80558111 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80623649) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4272 + ... + 13397.

It is an arithmetic number, because the mean of its divisors is an integer number (5389350).

Almost surely, 2^80623647 is an apocalyptic number.

80623647 is a deficient number, since it is larger than the sum of its proper divisors (48720753).

80623647 is a wasteful number, since it uses less digits than its factorization.

80623647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17704 (or 17685 counting only the distinct ones).

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

The square root of 80623647 is about 8979.0671564478. The cubic root of 80623647 is about 432.0037133168.

The spelling of 80623647 in words is "eighty million, six hundred twenty-three thousand, six hundred forty-seven".