64968930 has 48 divisors (see below), whose sum is σ = 181916280. Its totient is φ = 15992064.

The previous prime is 64968907. The next prime is 64968931. The reversal of 64968930 is 3986946.

It can be written as a sum of positive squares in 4 ways, for example, as 18224361 + 46744569 = 4269^2 + 6837^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (64968931) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 26595 + ... + 28934.

Almost surely, 2^64968930 is an apocalyptic number.

64968930 is an abundant number, since it is smaller than the sum of its proper divisors (116947350).

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

64968930 is a wasteful number, since it uses less digits than its factorization.

64968930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55555 (or 55552 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 45.

The square root of 64968930 is about 8060.3306383795. The cubic root of 64968930 is about 402.0085020850.

The spelling of 64968930 in words is "sixty-four million, nine hundred sixty-eight thousand, nine hundred thirty".