612982649 has 2 divisors, whose sum is σ = 612982650. Its totient is φ = 612982648.

The previous prime is 612982631. The next prime is 612982703. The reversal of 612982649 is 946289216.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 358420624 + 254562025 = 18932^2 + 15955^2 .

It is a cyclic number.

It is not a de Polignac number, because 612982649 - 2⁸ = 612982393 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (612982609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 306491324 + 306491325.

It is an arithmetic number, because the mean of its divisors is an integer number (306491325).

Almost surely, 2^612982649 is an apocalyptic number.

It is an amenable number.

612982649 is a deficient number, since it is larger than the sum of its proper divisors (1).

612982649 is an equidigital number, since it uses as much as digits as its factorization.

612982649 is an evil number, because the sum of its binary digits is even.

The product of its digits is 373248, while the sum is 47.

The square root of 612982649 is about 24758.4864036556. The cubic root of 612982649 is about 849.4726366601.

The spelling of 612982649 in words is "six hundred twelve million, nine hundred eighty-two thousand, six hundred forty-nine".