623456047 has 2 divisors, whose sum is σ = 623456048. Its totient is φ = 623456046.

The previous prime is 623456023. The next prime is 623456111. The reversal of 623456047 is 740654326.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 623456047 - 2⁷ = 623455919 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 623455997 and 623456015.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (623456017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 311728023 + 311728024.

It is an arithmetic number, because the mean of its divisors is an integer number (311728024).

Almost surely, 2^623456047 is an apocalyptic number.

623456047 is a deficient number, since it is larger than the sum of its proper divisors (1).

623456047 is an equidigital number, since it uses as much as digits as its factorization.

623456047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 120960, while the sum is 37.

The square root of 623456047 is about 24969.1018460817. The cubic root of 623456047 is about 854.2833601469.

The spelling of 623456047 in words is "six hundred twenty-three million, four hundred fifty-six thousand, forty-seven".