64360128 has 84 divisors (see below), whose sum is σ = 198116952. Its totient is φ = 18385920.

The previous prime is 64360117. The next prime is 64360139. The reversal of 64360128 is 82106346.

It is an interprime number because it is at equal distance from previous prime (64360117) and next prime (64360139).

It is a tau number, because it is divible by the number of its divisors (84).

It is a junction number, because it is equal to n+sod(n) for n = 64360095 and 64360104.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5988 + ... + 12828.

Almost surely, 2^64360128 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 64360128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (99058476).

64360128 is an abundant number, since it is smaller than the sum of its proper divisors (133756824).

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

64360128 is a wasteful number, since it uses less digits than its factorization.

64360128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6870 (or 6853 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 64360128 is about 8022.4764256431. The cubic root of 64360128 is about 400.7488637993.

The spelling of 64360128 in words is "sixty-four million, three hundred sixty thousand, one hundred twenty-eight".