76072961 has 4 divisors (see below), whose sum is σ = 76113492. Its totient is φ = 76032432.

The previous prime is 76072957. The next prime is 76072963. The reversal of 76072961 is 16927067.

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 20421361 + 55651600 = 4519^2 + 7460^2 .

It is a cyclic number.

It is not a de Polignac number, because 76072961 - 2² = 76072957 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (76072963) 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, 17306 + ... + 21251.

It is an arithmetic number, because the mean of its divisors is an integer number (19028373).

Almost surely, 2^76072961 is an apocalyptic number.

It is an amenable number.

76072961 is a deficient number, since it is larger than the sum of its proper divisors (40531).

76072961 is a wasteful number, since it uses less digits than its factorization.

76072961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40530.

The product of its (nonzero) digits is 31752, while the sum is 38.

The square root of 76072961 is about 8721.9814835850. The cubic root of 76072961 is about 423.7178632851.

The spelling of 76072961 in words is "seventy-six million, seventy-two thousand, nine hundred sixty-one".