607991369 has 2 divisors, whose sum is σ = 607991370. Its totient is φ = 607991368.

The previous prime is 607991357. The next prime is 607991477. The reversal of 607991369 is 963199706.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 387617344 + 220374025 = 19688^2 + 14845^2 .

It is a cyclic number.

It is not a de Polignac number, because 607991369 - 2⁴ = 607991353 is a prime.

It is a super-2 number, since 2×607991369² = 739307009556988322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (607991339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 303995684 + 303995685.

It is an arithmetic number, because the mean of its divisors is an integer number (303995685).

Almost surely, 2^607991369 is an apocalyptic number.

It is an amenable number.

607991369 is a deficient number, since it is larger than the sum of its proper divisors (1).

607991369 is an equidigital number, since it uses as much as digits as its factorization.

607991369 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 551124, while the sum is 50.

The square root of 607991369 is about 24657.4809946191. The cubic root of 607991369 is about 847.1607081266.

The spelling of 607991369 in words is "six hundred seven million, nine hundred ninety-one thousand, three hundred sixty-nine".