64977485 has 16 divisors (see below), whose sum is σ = 82835136. Its totient is φ = 48761088.

The previous prime is 64977469. The next prime is 64977491. The reversal of 64977485 is 58477946.

It is a cyclic number.

It is not a de Polignac number, because 64977485 - 2⁴ = 64977469 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28394 + ... + 30596.

It is an arithmetic number, because the mean of its divisors is an integer number (5177196).

Almost surely, 2^64977485 is an apocalyptic number.

It is an amenable number.

64977485 is a deficient number, since it is larger than the sum of its proper divisors (17857651).

64977485 is a wasteful number, since it uses less digits than its factorization.

64977485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2572.

The product of its digits is 1693440, while the sum is 50.

The square root of 64977485 is about 8060.8613063369. The cubic root of 64977485 is about 402.0261465795.

The spelling of 64977485 in words is "sixty-four million, nine hundred seventy-seven thousand, four hundred eighty-five".