64411785 has 12 divisors (see below), whose sum is σ = 111647172. Its totient is φ = 34352928.

The previous prime is 64411727. The next prime is 64411817. The reversal of 64411785 is 58711446.

It is a happy number.

64411785 is a `hidden beast` number, since 644 + 1 + 1 + 7 + 8 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 12873744 + 51538041 = 3588^2 + 7179^2 .

It is not a de Polignac number, because 64411785 - 2¹⁰ = 64410761 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 715642 + ... + 715731.

It is an arithmetic number, because the mean of its divisors is an integer number (9303931).

Almost surely, 2^64411785 is an apocalyptic number.

It is an amenable number.

64411785 is a deficient number, since it is larger than the sum of its proper divisors (47235387).

64411785 is a wasteful number, since it uses less digits than its factorization.

64411785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1431384 (or 1431381 counting only the distinct ones).

The product of its digits is 26880, while the sum is 36.

The square root of 64411785 is about 8025.6952969821. The cubic root of 64411785 is about 400.8560520469.

The spelling of 64411785 in words is "sixty-four million, four hundred eleven thousand, seven hundred eighty-five".