623956684573 has 4 divisors (see below), whose sum is σ = 623966071680. Its totient is φ = 623947297468.

The previous prime is 623956684531. The next prime is 623956684583. The reversal of 623956684573 is 375486659326.

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 623956684573 - 2³³ = 615366749981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (623956684513) 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, 4593133 + ... + 4727026.

It is an arithmetic number, because the mean of its divisors is an integer number (155991517920).

Almost surely, 2^623956684573 is an apocalyptic number.

It is an amenable number.

623956684573 is a deficient number, since it is larger than the sum of its proper divisors (9387107).

623956684573 is an equidigital number, since it uses as much as digits as its factorization.

623956684573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9387106.

The product of its digits is 195955200, while the sum is 64.

The spelling of 623956684573 in words is "six hundred twenty-three billion, nine hundred fifty-six million, six hundred eighty-four thousand, five hundred seventy-three".