64388079 has 12 divisors (see below), whose sum is σ = 106291536. Its totient is φ = 36793152.

The previous prime is 64388069. The next prime is 64388083. The reversal of 64388079 is 97088346.

It is a happy number.

It is not a de Polignac number, because 64388079 - 2⁵ = 64388047 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64388039) 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, 510954 + ... + 511079.

It is an arithmetic number, because the mean of its divisors is an integer number (8857628).

Almost surely, 2^64388079 is an apocalyptic number.

64388079 is a deficient number, since it is larger than the sum of its proper divisors (41903457).

64388079 is a wasteful number, since it uses less digits than its factorization.

64388079 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1022046 (or 1022043 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The square root of 64388079 is about 8024.2182796831. The cubic root of 64388079 is about 400.8068692274.

The spelling of 64388079 in words is "sixty-four million, three hundred eighty-eight thousand, seventy-nine".