64747379 has 4 divisors (see below), whose sum is σ = 66253176. Its totient is φ = 63241584.

The previous prime is 64747357. The next prime is 64747439. The reversal of 64747379 is 97374746.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 64747379 - 2²⁴ = 47970163 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64747279) 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, 752834 + ... + 752919.

It is an arithmetic number, because the mean of its divisors is an integer number (16563294).

Almost surely, 2^64747379 is an apocalyptic number.

64747379 is a deficient number, since it is larger than the sum of its proper divisors (1505797).

64747379 is a wasteful number, since it uses less digits than its factorization.

64747379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1505796.

The product of its digits is 889056, while the sum is 47.

The square root of 64747379 is about 8046.5756070517. The cubic root of 64747379 is about 401.5510176704.

It can be divided in two parts, 6474737 and 9, that added together give a palindrome (6474746).

The spelling of 64747379 in words is "sixty-four million, seven hundred forty-seven thousand, three hundred seventy-nine".