64620430 has 64 divisors (see below), whose sum is σ = 139087872. Its totient is φ = 21150720.

The previous prime is 64620427. The next prime is 64620433. The reversal of 64620430 is 3402646.

It is an interprime number because it is at equal distance from previous prime (64620427) and next prime (64620433).

It is a junction number, because it is equal to n+sod(n) for n = 64620395 and 64620404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64620433) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 210337 + ... + 210643.

It is an arithmetic number, because the mean of its divisors is an integer number (2173248).

Almost surely, 2^64620430 is an apocalyptic number.

64620430 is an abundant number, since it is smaller than the sum of its proper divisors (74467442).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64620430 is a wasteful number, since it uses less digits than its factorization.

64620430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 449.

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

The square root of 64620430 is about 8038.6833499025. The cubic root of 64620430 is about 401.2884080560.

The spelling of 64620430 in words is "sixty-four million, six hundred twenty thousand, four hundred thirty".