64997411 has 4 divisors (see below), whose sum is σ = 65184000. Its totient is φ = 64810824.

The previous prime is 64997407. The next prime is 64997441. The reversal of 64997411 is 11479946.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11479946 = 2 ⋅5739973.

It is a cyclic number.

It is not a de Polignac number, because 64997411 - 2² = 64997407 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64997441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 92771 + ... + 93468.

It is an arithmetic number, because the mean of its divisors is an integer number (16296000).

Almost surely, 2^64997411 is an apocalyptic number.

64997411 is a deficient number, since it is larger than the sum of its proper divisors (186589).

64997411 is a wasteful number, since it uses less digits than its factorization.

64997411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186588.

The product of its digits is 54432, while the sum is 41.

The square root of 64997411 is about 8062.0971837358. The cubic root of 64997411 is about 402.0672375014.

The spelling of 64997411 in words is "sixty-four million, nine hundred ninety-seven thousand, four hundred eleven".