64312630 has 16 divisors (see below), whose sum is σ = 117491760. Its totient is φ = 25340832.

The previous prime is 64312627. The next prime is 64312637. The reversal of 64312630 is 3621346.

It is a super-2 number, since 2×64312630² = 8272228755033800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 64312595 and 64312604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64312637) 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, 47325 + ... + 48664.

It is an arithmetic number, because the mean of its divisors is an integer number (7343235).

Almost surely, 2^64312630 is an apocalyptic number.

64312630 is a deficient number, since it is larger than the sum of its proper divisors (53179130).

64312630 is a wasteful number, since it uses less digits than its factorization.

64312630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96063.

The product of its (nonzero) digits is 2592, while the sum is 25.

The square root of 64312630 is about 8019.5155714045. The cubic root of 64312630 is about 400.6502548488.

Adding to 64312630 its reverse (3621346), we get a palindrome (67933976).

The spelling of 64312630 in words is "sixty-four million, three hundred twelve thousand, six hundred thirty".