64670376 has 64 divisors (see below), whose sum is σ = 174830400. Its totient is φ = 19865088.

The previous prime is 64670369. The next prime is 64670381. The reversal of 64670376 is 67307646.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14956 + ... + 18788.

It is an arithmetic number, because the mean of its divisors is an integer number (2731725).

Almost surely, 2^64670376 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 64670376, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87415200).

64670376 is an abundant number, since it is smaller than the sum of its proper divisors (110160024).

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

64670376 is a wasteful number, since it uses less digits than its factorization.

64670376 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3898 (or 3894 counting only the distinct ones).

The product of its (nonzero) digits is 127008, while the sum is 39.

The square root of 64670376 is about 8041.7893531228. The cubic root of 64670376 is about 401.3917685013.

The spelling of 64670376 in words is "sixty-four million, six hundred seventy thousand, three hundred seventy-six".