76643699 has 12 divisors (see below), whose sum is σ = 86043552. Its totient is φ = 68188560.

The previous prime is 76643669. The next prime is 76643711. The reversal of 76643699 is 99634667.

It is not a de Polignac number, because 76643699 - 2⁸ = 76643443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (76643669) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1052 + ... + 12425.

It is an arithmetic number, because the mean of its divisors is an integer number (7170296).

Almost surely, 2^76643699 is an apocalyptic number.

76643699 is a deficient number, since it is larger than the sum of its proper divisors (9399853).

76643699 is a wasteful number, since it uses less digits than its factorization.

76643699 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13546 (or 13535 counting only the distinct ones).

The product of its digits is 1469664, while the sum is 50.

The square root of 76643699 is about 8754.6387132765. The cubic root of 76643699 is about 424.7748731566.

The spelling of 76643699 in words is "seventy-six million, six hundred forty-three thousand, six hundred ninety-nine".