623700853957 has 2 divisors, whose sum is σ = 623700853958. Its totient is φ = 623700853956.

The previous prime is 623700853939. The next prime is 623700853961. The reversal of 623700853957 is 759358007326.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 373114510561 + 250586343396 = 610831^2 + 500586^2 .

It is a cyclic number.

It is not a de Polignac number, because 623700853957 - 2⁷ = 623700853829 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 623700853898 and 623700853907.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (623700823957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 311850426978 + 311850426979.

It is an arithmetic number, because the mean of its divisors is an integer number (311850426979).

Almost surely, 2^623700853957 is an apocalyptic number.

It is an amenable number.

623700853957 is a deficient number, since it is larger than the sum of its proper divisors (1).

623700853957 is an equidigital number, since it uses as much as digits as its factorization.

623700853957 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9525600, while the sum is 55.

The spelling of 623700853957 in words is "six hundred twenty-three billion, seven hundred million, eight hundred fifty-three thousand, nine hundred fifty-seven".