76390691 has 4 divisors (see below), whose sum is σ = 82266912. Its totient is φ = 70514472.

The previous prime is 76390687. The next prime is 76390711. The reversal of 76390691 is 19609367.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19609367 = 977 ⋅20071.

It is a cyclic number.

It is not a de Polignac number, because 76390691 - 2² = 76390687 is a prime.

It is not an unprimeable number, because it can be changed into a prime (76390991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2938091 + ... + 2938116.

It is an arithmetic number, because the mean of its divisors is an integer number (20566728).

Almost surely, 2^76390691 is an apocalyptic number.

76390691 is a deficient number, since it is larger than the sum of its proper divisors (5876221).

76390691 is a wasteful number, since it uses less digits than its factorization.

76390691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5876220.

The product of its (nonzero) digits is 61236, while the sum is 41.

The square root of 76390691 is about 8740.1768288748. The cubic root of 76390691 is about 424.3069507328.

The spelling of 76390691 in words is "seventy-six million, three hundred ninety thousand, six hundred ninety-one".