64106380 has 72 divisors (see below), whose sum is σ = 153235152. Its totient is φ = 22391424.

The previous prime is 64106363. The next prime is 64106401. The reversal of 64106380 is 8360146.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 93519 + ... + 94201.

It is an arithmetic number, because the mean of its divisors is an integer number (2128266).

Almost surely, 2^64106380 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 64106380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76617576).

64106380 is an abundant number, since it is smaller than the sum of its proper divisors (89128772).

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

64106380 is a wasteful number, since it uses less digits than its factorization.

64106380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 743 (or 722 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 64106380 is about 8006.6459894265. The cubic root of 64106380 is about 400.2215023192.

The spelling of 64106380 in words is "sixty-four million, one hundred six thousand, three hundred eighty".