623316261 has 32 divisors (see below), whose sum is σ = 934179840. Its totient is φ = 367766784.

The previous prime is 623316259. The next prime is 623316283. The reversal of 623316261 is 162613326.

It is not a de Polignac number, because 623316261 - 2¹ = 623316259 is a prime.

It is a super-2 number, since 2×623316261² = 777046322454040242, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (623316251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 50845 + ... + 61901.

It is an arithmetic number, because the mean of its divisors is an integer number (29193120).

Almost surely, 2^623316261 is an apocalyptic number.

It is an amenable number.

623316261 is a deficient number, since it is larger than the sum of its proper divisors (310863579).

623316261 is a wasteful number, since it uses less digits than its factorization.

623316261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11145.

The product of its digits is 7776, while the sum is 30.

The square root of 623316261 is about 24966.3025095828. The cubic root of 623316261 is about 854.2195086638.

Adding to 623316261 its reverse (162613326), we get a palindrome (785929587).

The spelling of 623316261 in words is "six hundred twenty-three million, three hundred sixteen thousand, two hundred sixty-one".