64977385 has 8 divisors (see below), whose sum is σ = 85061376. Its totient is φ = 47256240.

The previous prime is 64977379. The next prime is 64977389. The reversal of 64977385 is 58377946.

It is a happy number.

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

It is not a de Polignac number, because 64977385 - 2³ = 64977377 is a prime.

It is a super-2 number, since 2×64977385² = 8444121122876450, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64977389) 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, 590649 + ... + 590758.

It is an arithmetic number, because the mean of its divisors is an integer number (10632672).

Almost surely, 2^64977385 is an apocalyptic number.

It is an amenable number.

64977385 is a deficient number, since it is larger than the sum of its proper divisors (20083991).

64977385 is a wasteful number, since it uses less digits than its factorization.

64977385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1181423.

The product of its digits is 1270080, while the sum is 49.

The square root of 64977385 is about 8060.8551035234. The cubic root of 64977385 is about 402.0259403407.

The spelling of 64977385 in words is "sixty-four million, nine hundred seventy-seven thousand, three hundred eighty-five".