79644764 has 6 divisors (see below), whose sum is σ = 139378344. Its totient is φ = 39822380.

The previous prime is 79644739. The next prime is 79644769. The reversal of 79644764 is 46744697.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79644769) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9955592 + ... + 9955599.

It is an arithmetic number, because the mean of its divisors is an integer number (23229724).

Almost surely, 2^79644764 is an apocalyptic number.

It is an amenable number.

79644764 is a deficient number, since it is larger than the sum of its proper divisors (59733580).

79644764 is a wasteful number, since it uses less digits than its factorization.

79644764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19911195 (or 19911193 counting only the distinct ones).

The product of its digits is 1016064, while the sum is 47.

The square root of 79644764 is about 8924.3915198741. The cubic root of 79644764 is about 430.2482143633.

It can be divided in two parts, 79644 and 764, that added together give a palindrome (80408).

The spelling of 79644764 in words is "seventy-nine million, six hundred forty-four thousand, seven hundred sixty-four".