64404051 has 8 divisors (see below), whose sum is σ = 86386944. Its totient is φ = 42678600.

The previous prime is 64403947. The next prime is 64404061. The reversal of 64404051 is 15040446.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 64404051 - 2⁹ = 64403539 is a prime.

It is not an unprimeable number, because it can be changed into a prime (64404061) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63775 + ... + 64776.

It is an arithmetic number, because the mean of its divisors is an integer number (10798368).

Almost surely, 2^64404051 is an apocalyptic number.

64404051 is a deficient number, since it is larger than the sum of its proper divisors (21982893).

64404051 is a wasteful number, since it uses less digits than its factorization.

64404051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128721.

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 64404051 is about 8025.2134551051. The cubic root of 64404051 is about 400.8400076497.

Adding to 64404051 its reverse (15040446), we get a palindrome (79444497).

The spelling of 64404051 in words is "sixty-four million, four hundred four thousand, fifty-one".