64975580 has 24 divisors (see below), whose sum is σ = 139623792. Its totient is φ = 25385472.

The previous prime is 64975577. The next prime is 64975583. The reversal of 64975580 is 8557946.

It is an interprime number because it is at equal distance from previous prime (64975577) and next prime (64975583).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64975583) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36917 + ... + 38636.

It is an arithmetic number, because the mean of its divisors is an integer number (5817658).

Almost surely, 2^64975580 is an apocalyptic number.

It is an amenable number.

64975580 is an abundant number, since it is smaller than the sum of its proper divisors (74648212).

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

64975580 is a wasteful number, since it uses less digits than its factorization.

64975580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75605 (or 75603 counting only the distinct ones).

The product of its (nonzero) digits is 302400, while the sum is 44.

The square root of 64975580 is about 8060.7431419194. The cubic root of 64975580 is about 402.0222176940.

The spelling of 64975580 in words is "sixty-four million, nine hundred seventy-five thousand, five hundred eighty".