64645411 has 4 divisors (see below), whose sum is σ = 64703800. Its totient is φ = 64587024.

The previous prime is 64645307. The next prime is 64645457. The reversal of 64645411 is 11454646.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 64645411 - 2¹⁷ = 64514339 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64645481) 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, 27501 + ... + 29758.

It is an arithmetic number, because the mean of its divisors is an integer number (16175950).

Almost surely, 2^64645411 is an apocalyptic number.

64645411 is a deficient number, since it is larger than the sum of its proper divisors (58389).

64645411 is a wasteful number, since it uses less digits than its factorization.

64645411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58388.

The product of its digits is 11520, while the sum is 31.

The square root of 64645411 is about 8040.2369989945. The cubic root of 64645411 is about 401.3401114890.

It can be divided in two parts, 64645 and 411, that added together give a palindrome (65056).

The spelling of 64645411 in words is "sixty-four million, six hundred forty-five thousand, four hundred eleven".