623140537 has 2 divisors, whose sum is σ = 623140538. Its totient is φ = 623140536.

The previous prime is 623140481. The next prime is 623140543. The reversal of 623140537 is 735041326.

623140537 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 can be written as a sum of positive squares in only one way, i.e., 533194281 + 89946256 = 23091^2 + 9484^2 .

It is a cyclic number.

It is not a de Polignac number, because 623140537 - 2²⁷ = 488922809 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 623140499 and 623140508.

It is not a weakly prime, because it can be changed into another prime (623140237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 311570268 + 311570269.

It is an arithmetic number, because the mean of its divisors is an integer number (311570269).

Almost surely, 2^623140537 is an apocalyptic number.

It is an amenable number.

623140537 is a deficient number, since it is larger than the sum of its proper divisors (1).

623140537 is an equidigital number, since it uses as much as digits as its factorization.

623140537 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15120, while the sum is 31.

The square root of 623140537 is about 24962.7830379547. The cubic root of 623140537 is about 854.1392278676.

The spelling of 623140537 in words is "six hundred twenty-three million, one hundred forty thousand, five hundred thirty-seven".