76696643 has 4 divisors (see below), whose sum is σ = 76943568. Its totient is φ = 76449720.

The previous prime is 76696579. The next prime is 76696661. The reversal of 76696643 is 34669667.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34669667 = 1543 ⋅22469.

It is a cyclic number.

It is not a de Polignac number, because 76696643 - 2⁶ = 76696579 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (76696343) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 122996 + ... + 123617.

It is an arithmetic number, because the mean of its divisors is an integer number (19235892).

Almost surely, 2^76696643 is an apocalyptic number.

76696643 is a deficient number, since it is larger than the sum of its proper divisors (246925).

76696643 is a wasteful number, since it uses less digits than its factorization.

76696643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246924.

The product of its digits is 979776, while the sum is 47.

The square root of 76696643 is about 8757.6619596785. The cubic root of 76696643 is about 424.8726594273.

It can be divided in two parts, 7669664 and 3, that added together give a palindrome (7669667).

The spelling of 76696643 in words is "seventy-six million, six hundred ninety-six thousand, six hundred forty-three".