623136081 has 16 divisors (see below), whose sum is σ = 860690880. Its totient is φ = 400730880.

The previous prime is 623136061. The next prime is 623136089. The reversal of 623136081 is 180631326.

It is not a de Polignac number, because 623136081 - 2¹³ = 623127889 is a prime.

It is a super-2 number, since 2×623136081² = 776597150888077122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (623136089) 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, 17515 + ... + 39408.

It is an arithmetic number, because the mean of its divisors is an integer number (53793180).

Almost surely, 2^623136081 is an apocalyptic number.

It is an amenable number.

623136081 is a deficient number, since it is larger than the sum of its proper divisors (237554799).

623136081 is a wasteful number, since it uses less digits than its factorization.

623136081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57056.

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 623136081 is about 24962.6937849263. The cubic root of 623136081 is about 854.1371919152.

The spelling of 623136081 in words is "six hundred twenty-three million, one hundred thirty-six thousand, eighty-one".