623575679 has 2 divisors, whose sum is σ = 623575680. Its totient is φ = 623575678.

The previous prime is 623575669. The next prime is 623575681. The reversal of 623575679 is 976575326.

623575679 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 623575679 - 2⁸ = 623575423 is a prime.

It is a super-2 number, since 2×623575679² = 777693254880622082, which contains 22 as substring.

Together with 623575681, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (623575619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 311787839 + 311787840.

It is an arithmetic number, because the mean of its divisors is an integer number (311787840).

Almost surely, 2^623575679 is an apocalyptic number.

623575679 is a deficient number, since it is larger than the sum of its proper divisors (1).

623575679 is an equidigital number, since it uses as much as digits as its factorization.

623575679 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2381400, while the sum is 50.

The square root of 623575679 is about 24971.4973319583. The cubic root of 623575679 is about 854.3379981021.

The spelling of 623575679 in words is "six hundred twenty-three million, five hundred seventy-five thousand, six hundred seventy-nine".