76996861 has 4 divisors (see below), whose sum is σ = 77017500. Its totient is φ = 76976224.

The previous prime is 76996841. The next prime is 76996883. The reversal of 76996861 is 16869967.

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 22325625 + 54671236 = 4725^2 + 7394^2 .

It is a cyclic number.

It is not a de Polignac number, because 76996861 - 2¹³ = 76988669 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 76996799 and 76996808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76996831) 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, 2986 + ... + 12763.

It is an arithmetic number, because the mean of its divisors is an integer number (19254375).

Almost surely, 2^76996861 is an apocalyptic number.

It is an amenable number.

76996861 is a deficient number, since it is larger than the sum of its proper divisors (20639).

76996861 is a wasteful number, since it uses less digits than its factorization.

76996861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20638.

The product of its digits is 979776, while the sum is 52.

The square root of 76996861 is about 8774.7855244445. The cubic root of 76996861 is about 425.4263053450.

The spelling of 76996861 in words is "seventy-six million, nine hundred ninety-six thousand, eight hundred sixty-one".