64235479 has 16 divisors (see below), whose sum is σ = 82043136. Its totient is φ = 48830400.

The previous prime is 64235471. The next prime is 64235489. The reversal of 64235479 is 97453246.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 64235479 - 2³ = 64235471 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64235471) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7017 + ... + 13330.

It is an arithmetic number, because the mean of its divisors is an integer number (5127696).

Almost surely, 2^64235479 is an apocalyptic number.

64235479 is a deficient number, since it is larger than the sum of its proper divisors (17807657).

64235479 is a wasteful number, since it uses less digits than its factorization.

64235479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20406.

The product of its digits is 181440, while the sum is 40.

The square root of 64235479 is about 8014.7039246625. The cubic root of 64235479 is about 400.4899808020.

The spelling of 64235479 in words is "sixty-four million, two hundred thirty-five thousand, four hundred seventy-nine".