76156961 has 4 divisors (see below), whose sum is σ = 76227732. Its totient is φ = 76086192.

The previous prime is 76156909. The next prime is 76156973. The reversal of 76156961 is 16965167.

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 36529936 + 39627025 = 6044^2 + 6295^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-76156961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (76156361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33746 + ... + 35931.

It is an arithmetic number, because the mean of its divisors is an integer number (19056933).

Almost surely, 2^76156961 is an apocalyptic number.

It is an amenable number.

76156961 is a deficient number, since it is larger than the sum of its proper divisors (70771).

76156961 is a wasteful number, since it uses less digits than its factorization.

76156961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70770.

The product of its digits is 68040, while the sum is 41.

The square root of 76156961 is about 8726.7955745508. The cubic root of 76156961 is about 423.8737627782.

The spelling of 76156961 in words is "seventy-six million, one hundred fifty-six thousand, nine hundred sixty-one".