64994720 has 48 divisors (see below), whose sum is σ = 175488768. Its totient is φ = 22283520.

The previous prime is 64994701. The next prime is 64994729. The reversal of 64994720 is 2749946.

It is not an unprimeable number, because it can be changed into a prime (64994729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27896 + ... + 30135.

It is an arithmetic number, because the mean of its divisors is an integer number (3656016).

Almost surely, 2^64994720 is an apocalyptic number.

It is an amenable number.

64994720 is an abundant number, since it is smaller than the sum of its proper divisors (110494048).

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

64994720 is a wasteful number, since it uses less digits than its factorization.

64994720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58053 (or 58045 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 41.

The square root of 64994720 is about 8061.9302899492. The cubic root of 64994720 is about 402.0616886759.

The spelling of 64994720 in words is "sixty-four million, nine hundred ninety-four thousand, seven hundred twenty".