64606190400 has 504 divisors, whose sum is σ = 242199956544. Its totient is φ = 16301260800.

The previous prime is 64606190399. The next prime is 64606190413. The reversal of 64606190400 is 409160646.

64606190400 is a `hidden beast` number, since 6 + 4 + 60 + 6 + 190 + 400 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 32125395 + ... + 32127405.

Almost surely, 2^64606190400 is an apocalyptic number.

64606190400 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 64606190400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (121099978272).

64606190400 is an abundant number, since it is smaller than the sum of its proper divisors (177593766144).

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

64606190400 is a wasteful number, since it uses less digits than its factorization.

64606190400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2159 (or 2141 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The spelling of 64606190400 in words is "sixty-four billion, six hundred six million, one hundred ninety thousand, four hundred".