612607531 has 2 divisors, whose sum is σ = 612607532. Its totient is φ = 612607530.

The previous prime is 612607517. The next prime is 612607573. The reversal of 612607531 is 135706216.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 612607531 - 2⁷ = 612607403 is a prime.

It is a super-2 number, since 2×612607531² = 750575974075831922, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 612607493 and 612607502.

It is not a weakly prime, because it can be changed into another prime (612607031) 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 as a sum of consecutive naturals, namely, 306303765 + 306303766.

It is an arithmetic number, because the mean of its divisors is an integer number (306303766).

Almost surely, 2^612607531 is an apocalyptic number.

612607531 is a deficient number, since it is larger than the sum of its proper divisors (1).

612607531 is an equidigital number, since it uses as much as digits as its factorization.

612607531 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 612607531 is about 24750.9097004534. The cubic root of 612607531 is about 849.2993215320.

The spelling of 612607531 in words is "six hundred twelve million, six hundred seven thousand, five hundred thirty-one".