623667331 has 16 divisors (see below), whose sum is σ = 737658880. Its totient is φ = 515989440.

The previous prime is 623667323. The next prime is 623667349. The reversal of 623667331 is 133766326.

It is a cyclic number.

It is not a de Polignac number, because 623667331 - 2³ = 623667323 is a prime.

It is a super-2 number, since 2×623667331² = 777921879513327122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (623667311) 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, 85240 + ... + 92266.

It is an arithmetic number, because the mean of its divisors is an integer number (46103680).

Almost surely, 2^623667331 is an apocalyptic number.

623667331 is a deficient number, since it is larger than the sum of its proper divisors (113991549).

623667331 is a wasteful number, since it uses less digits than its factorization.

623667331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7474.

The product of its digits is 81648, while the sum is 37.

The square root of 623667331 is about 24973.3323967788. The cubic root of 623667331 is about 854.3798523913.

The spelling of 623667331 in words is "six hundred twenty-three million, six hundred sixty-seven thousand, three hundred thirty-one".