64676939400 has 192 divisors, whose sum is σ = 223484803200. Its totient is φ = 17192321280.

The previous prime is 64676939347. The next prime is 64676939419. The reversal of 64676939400 is 493967646.

64676939400 is a `hidden beast` number, since 6 + 467 + 6 + 93 + 94 + 0 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1692909 + ... + 1730691.

It is an arithmetic number, because the mean of its divisors is an integer number (1163983350).

Almost surely, 2^64676939400 is an apocalyptic number.

64676939400 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64676939400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (111742401600).

64676939400 is an abundant number, since it is smaller than the sum of its proper divisors (158807863800).

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

64676939400 is a wasteful number, since it uses less digits than its factorization.

64676939400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38125 (or 38110 counting only the distinct ones).

The product of its (nonzero) digits is 5878656, while the sum is 54.

The spelling of 64676939400 in words is "sixty-four billion, six hundred seventy-six million, nine hundred thirty-nine thousand, four hundred".