64289370 has 48 divisors (see below), whose sum is σ = 161334432. Its totient is φ = 16394400.

The previous prime is 64289363. The next prime is 64289437. The reversal of 64289370 is 7398246.

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, 13845 + ... + 17895.

It is an arithmetic number, because the mean of its divisors is an integer number (3361134).

Almost surely, 2^64289370 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64289370, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80667216).

64289370 is an abundant number, since it is smaller than the sum of its proper divisors (97045062).

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

64289370 is a wasteful number, since it uses less digits than its factorization.

64289370 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4107 (or 4084 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 39.

The square root of 64289370 is about 8018.0652279711. The cubic root of 64289370 is about 400.6019478592.

The spelling of 64289370 in words is "sixty-four million, two hundred eighty-nine thousand, three hundred seventy".