80765477 has 8 divisors (see below), whose sum is σ = 87078264. Its totient is φ = 74467008.

The previous prime is 80765467. The next prime is 80765479. The reversal of 80765477 is 77456708.

It can be written as a sum of positive squares in 4 ways, for example, as 1359556 + 79405921 = 1166^2 + 8911^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 80765477 - 2⁸ = 80765221 is a prime.

It is a super-3 number, since 3×80765477³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80765479) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10103 + ... + 16235.

It is an arithmetic number, because the mean of its divisors is an integer number (10884783).

Almost surely, 2^80765477 is an apocalyptic number.

It is an amenable number.

80765477 is a deficient number, since it is larger than the sum of its proper divisors (6312787).

80765477 is a wasteful number, since it uses less digits than its factorization.

80765477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7159.

The product of its (nonzero) digits is 329280, while the sum is 44.

The square root of 80765477 is about 8986.9614998619. The cubic root of 80765477 is about 432.2568863227.

The spelling of 80765477 in words is "eighty million, seven hundred sixty-five thousand, four hundred seventy-seven".