64604769 has 16 divisors (see below), whose sum is σ = 94617600. Its totient is φ = 39028176.

The previous prime is 64604747. The next prime is 64604797. The reversal of 64604769 is 96740646.

It is not a de Polignac number, because 64604769 - 2⁵ = 64604737 is a prime.

It is a super-2 number, since 2×64604769² = 8347552355086722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 64604769.

It is not an unprimeable number, because it can be changed into a prime (64604269) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23329 + ... + 25950.

It is an arithmetic number, because the mean of its divisors is an integer number (5913600).

Almost surely, 2^64604769 is an apocalyptic number.

64604769 is a gapful number since it is divisible by the number (69) formed by its first and last digit.

It is an amenable number.

64604769 is a deficient number, since it is larger than the sum of its proper divisors (30012831).

64604769 is a wasteful number, since it uses less digits than its factorization.

64604769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49324.

The product of its (nonzero) digits is 217728, while the sum is 42.

The square root of 64604769 is about 8037.7091885686. The cubic root of 64604769 is about 401.2559875272.

The spelling of 64604769 in words is "sixty-four million, six hundred four thousand, seven hundred sixty-nine".