612651497 has 2 divisors, whose sum is σ = 612651498. Its totient is φ = 612651496.

The previous prime is 612651493. The next prime is 612651503. The reversal of 612651497 is 794156216.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 571640281 + 41011216 = 23909^2 + 6404^2 .

It is a cyclic number.

It is not a de Polignac number, because 612651497 - 2² = 612651493 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (612651493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 306325748 + 306325749.

It is an arithmetic number, because the mean of its divisors is an integer number (306325749).

Almost surely, 2^612651497 is an apocalyptic number.

It is an amenable number.

612651497 is a deficient number, since it is larger than the sum of its proper divisors (1).

612651497 is an equidigital number, since it uses as much as digits as its factorization.

612651497 is an evil number, because the sum of its binary digits is even.

The product of its digits is 90720, while the sum is 41.

The square root of 612651497 is about 24751.7978538934. The cubic root of 612651497 is about 849.3196387274.

The spelling of 612651497 in words is "six hundred twelve million, six hundred fifty-one thousand, four hundred ninety-seven".