64404045 has 32 divisors (see below), whose sum is σ = 114892800. Its totient is φ = 34229952.

The previous prime is 64403947. The next prime is 64404061. The reversal of 64404045 is 54040446.

It is not a de Polignac number, because 64404045 - 2⁷ = 64403917 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 49716 + ... + 50994.

It is an arithmetic number, because the mean of its divisors is an integer number (3590400).

Almost surely, 2^64404045 is an apocalyptic number.

It is an amenable number.

64404045 is a deficient number, since it is larger than the sum of its proper divisors (50488755).

64404045 is a wasteful number, since it uses less digits than its factorization.

64404045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1666 (or 1660 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 27.

The square root of 64404045 is about 8025.2130812833. The cubic root of 64404045 is about 400.8399952020.

The spelling of 64404045 in words is "sixty-four million, four hundred four thousand, forty-five".