64706376420 has 192 divisors, whose sum is σ = 230688944640. Its totient is φ = 14750055936.

The previous prime is 64706376419. The next prime is 64706376433. The reversal of 64706376420 is 2467360746.

64706376420 is a `hidden beast` number, since 6 + 4 + 7 + 0 + 637 + 6 + 4 + 2 + 0 = 666.

64706376420 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1386994 + ... + 1432886.

It is an arithmetic number, because the mean of its divisors is an integer number (1201504920).

Almost surely, 2^64706376420 is an apocalyptic number.

64706376420 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 64706376420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (115344472320).

64706376420 is an abundant number, since it is smaller than the sum of its proper divisors (165982568220).

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

64706376420 is a wasteful number, since it uses less digits than its factorization.

64706376420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46291 (or 46283 counting only the distinct ones).

The product of its (nonzero) digits is 1016064, while the sum is 45.

The spelling of 64706376420 in words is "sixty-four billion, seven hundred six million, three hundred seventy-six thousand, four hundred twenty".