64606405400 has 96 divisors (see below), whose sum is σ = 154607217600. Its totient is φ = 25096780800.

The previous prime is 64606405387. The next prime is 64606405429. The reversal of 64606405400 is 450460646.

It is a congruent number.

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 23 ways as a sum of consecutive naturals, for example, 930284 + ... + 997316.

It is an arithmetic number, because the mean of its divisors is an integer number (1610491850).

Almost surely, 2^64606405400 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64606405400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (77303608800).

64606405400 is an abundant number, since it is smaller than the sum of its proper divisors (90000812200).

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

64606405400 is a wasteful number, since it uses less digits than its factorization.

64606405400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67189 (or 67180 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 35.

The spelling of 64606405400 in words is "sixty-four billion, six hundred six million, four hundred five thousand, four hundred".