64402630 has 32 divisors (see below), whose sum is σ = 124843680. Its totient is φ = 23831040.

The previous prime is 64402621. The next prime is 64402631. The reversal of 64402630 is 3620446.

It is a junction number, because it is equal to n+sod(n) for n = 64402595 and 64402604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64402631) 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, 6820 + ... + 13240.

It is an arithmetic number, because the mean of its divisors is an integer number (3901365).

Almost surely, 2^64402630 is an apocalyptic number.

64402630 is a deficient number, since it is larger than the sum of its proper divisors (60441050).

64402630 is a wasteful number, since it uses less digits than its factorization.

64402630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6504.

The product of its (nonzero) digits is 3456, while the sum is 25.

The square root of 64402630 is about 8025.1249211461. The cubic root of 64402630 is about 400.8370596062.

The spelling of 64402630 in words is "sixty-four million, four hundred two thousand, six hundred thirty".