653684469 has 4 divisors (see below), whose sum is σ = 871579296. Its totient is φ = 435789644.

The previous prime is 653684431. The next prime is 653684477. The reversal of 653684469 is 964486356.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 653684469 - 2¹³ = 653676277 is a prime.

It is a super-2 number, since 2×653684469² = 854606770023623922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (653684429) 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, 108947409 + ... + 108947414.

It is an arithmetic number, because the mean of its divisors is an integer number (217894824).

Almost surely, 2^653684469 is an apocalyptic number.

It is an amenable number.

653684469 is a deficient number, since it is larger than the sum of its proper divisors (217894827).

653684469 is a wasteful number, since it uses less digits than its factorization.

653684469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217894826.

The product of its digits is 3732480, while the sum is 51.

The square root of 653684469 is about 25567.2538415842. The cubic root of 653684469 is about 867.8727563943.

The spelling of 653684469 in words is "six hundred fifty-three million, six hundred eighty-four thousand, four hundred sixty-nine".