64620006 has 32 divisors (see below), whose sum is σ = 141308928. Its totient is φ = 19537440.

The previous prime is 64619999. The next prime is 64620047. The reversal of 64620006 is 60002646.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39256 + ... + 40868.

It is an arithmetic number, because the mean of its divisors is an integer number (4415904).

Almost surely, 2^64620006 is an apocalyptic number.

64620006 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

64620006 is an abundant number, since it is smaller than the sum of its proper divisors (76688922).

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

64620006 is a wasteful number, since it uses less digits than its factorization.

64620006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2236.

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 64620006 is about 8038.6569773812. The cubic root of 64620006 is about 401.2875303838.

The spelling of 64620006 in words is "sixty-four million, six hundred twenty thousand, six".