64630319 has 8 divisors (see below), whose sum is σ = 71847552. Its totient is φ = 57733920.

The previous prime is 64630289. The next prime is 64630327. The reversal of 64630319 is 91303646.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64630319 is a prime.

It is a super-2 number, since 2×64630319² = 8354156268083522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64630339) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79784 + ... + 80589.

It is an arithmetic number, because the mean of its divisors is an integer number (8980944).

Almost surely, 2^64630319 is an apocalyptic number.

64630319 is a deficient number, since it is larger than the sum of its proper divisors (7217233).

64630319 is a wasteful number, since it uses less digits than its factorization.

64630319 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160417.

The product of its (nonzero) digits is 11664, while the sum is 32.

The square root of 64630319 is about 8039.2984146628. The cubic root of 64630319 is about 401.3088770142.

The spelling of 64630319 in words is "sixty-four million, six hundred thirty thousand, three hundred nineteen".