76610881 has 4 divisors (see below), whose sum is σ = 76676292. Its totient is φ = 76545472.

The previous prime is 76610873. The next prime is 76610899. The reversal of 76610881 is 18801667.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 29811600 + 46799281 = 5460^2 + 6841^2 .

It is a cyclic number.

It is not a de Polignac number, because 76610881 - 2³ = 76610873 is a prime.

It is a super-2 number, since 2×76610881² = 11738454175192322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 76610881.

It is not an unprimeable number, because it can be changed into a prime (76610581) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30916 + ... + 33301.

It is an arithmetic number, because the mean of its divisors is an integer number (19169073).

Almost surely, 2^76610881 is an apocalyptic number.

It is an amenable number.

76610881 is a deficient number, since it is larger than the sum of its proper divisors (65411).

76610881 is a wasteful number, since it uses less digits than its factorization.

76610881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65410.

The product of its (nonzero) digits is 16128, while the sum is 37.

The square root of 76610881 is about 8752.7641919567. The cubic root of 76610881 is about 424.7142365044.

The spelling of 76610881 in words is "seventy-six million, six hundred ten thousand, eight hundred eighty-one".