76715661 has 16 divisors (see below), whose sum is σ = 112696128. Its totient is φ = 46032000.

The previous prime is 76715659. The next prime is 76715663. The reversal of 76715661 is 16651767.

It is an interprime number because it is at equal distance from previous prime (76715659) and next prime (76715663).

It is not a de Polignac number, because 76715661 - 2¹ = 76715659 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76715663) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8176 + ... + 14841.

It is an arithmetic number, because the mean of its divisors is an integer number (7043508).

Almost surely, 2^76715661 is an apocalyptic number.

It is an amenable number.

76715661 is a deficient number, since it is larger than the sum of its proper divisors (35980467).

76715661 is a wasteful number, since it uses less digits than its factorization.

76715661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23132.

The product of its digits is 52920, while the sum is 39.

The square root of 76715661 is about 8758.7476844581. The cubic root of 76715661 is about 424.9077742213.

The spelling of 76715661 in words is "seventy-six million, seven hundred fifteen thousand, six hundred sixty-one".