80956577 has 12 divisors (see below), whose sum is σ = 89111484. Its totient is φ = 73494720.

The previous prime is 80956541. The next prime is 80956609. The reversal of 80956577 is 77565908.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 58308496 + 22648081 = 7636^2 + 4759^2 .

It is not a de Polignac number, because 80956577 - 2¹² = 80952481 is a prime.

It is not an unprimeable number, because it can be changed into a prime (80956507) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6383 + ... + 14235.

It is an arithmetic number, because the mean of its divisors is an integer number (7425957).

Almost surely, 2^80956577 is an apocalyptic number.

It is an amenable number.

80956577 is a deficient number, since it is larger than the sum of its proper divisors (8154907).

80956577 is a wasteful number, since it uses less digits than its factorization.

80956577 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7940 (or 7927 counting only the distinct ones).

The product of its (nonzero) digits is 529200, while the sum is 47.

The square root of 80956577 is about 8997.5872877122. The cubic root of 80956577 is about 432.5975402310.

The spelling of 80956577 in words is "eighty million, nine hundred fifty-six thousand, five hundred seventy-seven".