64988959 has 8 divisors (see below), whose sum is σ = 74375840. Its totient is φ = 55627776.

The previous prime is 64988951. The next prime is 64988981. The reversal of 64988959 is 95988946.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 64988959 - 2³ = 64988951 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64988951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 654 + ... + 11419.

It is an arithmetic number, because the mean of its divisors is an integer number (9296980).

Almost surely, 2^64988959 is an apocalyptic number.

64988959 is a deficient number, since it is larger than the sum of its proper divisors (9386881).

64988959 is a wasteful number, since it uses less digits than its factorization.

64988959 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12849.

The product of its digits is 5598720, while the sum is 58.

The square root of 64988959 is about 8061.5729854663. The cubic root of 64988959 is about 402.0498090144.

The spelling of 64988959 in words is "sixty-four million, nine hundred eighty-eight thousand, nine hundred fifty-nine".