656013453 has 4 divisors (see below), whose sum is σ = 874684608. Its totient is φ = 437342300.

The previous prime is 656013439. The next prime is 656013473. The reversal of 656013453 is 354310656.

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 656013453 - 2⁹ = 656012941 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (656013473) 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, 109335573 + ... + 109335578.

It is an arithmetic number, because the mean of its divisors is an integer number (218671152).

Almost surely, 2^656013453 is an apocalyptic number.

It is an amenable number.

656013453 is a deficient number, since it is larger than the sum of its proper divisors (218671155).

656013453 is a wasteful number, since it uses less digits than its factorization.

656013453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218671154.

The product of its (nonzero) digits is 32400, while the sum is 33.

The square root of 656013453 is about 25612.7595740873. The cubic root of 656013453 is about 868.9022367787.

The spelling of 656013453 in words is "six hundred fifty-six million, thirteen thousand, four hundred fifty-three".