64604369 has 4 divisors (see below), whose sum is σ = 68404644. Its totient is φ = 60804096.

The previous prime is 64604363. The next prime is 64604387. The reversal of 64604369 is 96340646.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 96340646 = 2 ⋅48170323.

It can be written as a sum of positive squares in 2 ways, for example, as 32262400 + 32341969 = 5680^2 + 5687^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64604369 is a prime.

It is a super-2 number, since 2×64604369² = 8347448987776322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64604363) 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, 1900112 + ... + 1900145.

It is an arithmetic number, because the mean of its divisors is an integer number (17101161).

Almost surely, 2^64604369 is an apocalyptic number.

It is an amenable number.

64604369 is a deficient number, since it is larger than the sum of its proper divisors (3800275).

64604369 is a wasteful number, since it uses less digits than its factorization.

64604369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3800274.

The product of its (nonzero) digits is 93312, while the sum is 38.

The square root of 64604369 is about 8037.6843058184. The cubic root of 64604369 is about 401.2551594009.

The spelling of 64604369 in words is "sixty-four million, six hundred four thousand, three hundred sixty-nine".