64397958 has 16 divisors (see below), whose sum is σ = 129066240. Its totient is φ = 21420936.

The previous prime is 64397941. The next prime is 64397959. The reversal of 64397958 is 85979346.

64397958 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 64397958.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64397959) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8098 + ... + 13941.

It is an arithmetic number, because the mean of its divisors is an integer number (8066640).

Almost surely, 2^64397958 is an apocalyptic number.

64397958 is an abundant number, since it is smaller than the sum of its proper divisors (64668282).

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

64397958 is a wasteful number, since it uses less digits than its factorization.

64397958 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22531.

The product of its digits is 1632960, while the sum is 51.

The square root of 64397958 is about 8024.8338300553. The cubic root of 64397958 is about 400.8273666478.

The spelling of 64397958 in words is "sixty-four million, three hundred ninety-seven thousand, nine hundred fifty-eight".