649658167 has 2 divisors, whose sum is σ = 649658168. Its totient is φ = 649658166.

The previous prime is 649658137. The next prime is 649658189. The reversal of 649658167 is 761856946.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 649658167 - 2²⁷ = 515440439 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (649658117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 324829083 + 324829084.

It is an arithmetic number, because the mean of its divisors is an integer number (324829084).

Almost surely, 2^649658167 is an apocalyptic number.

649658167 is a deficient number, since it is larger than the sum of its proper divisors (1).

649658167 is an equidigital number, since it uses as much as digits as its factorization.

649658167 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2177280, while the sum is 52.

The square root of 649658167 is about 25488.3927896602. The cubic root of 649658167 is about 866.0872278871.

The spelling of 649658167 in words is "six hundred forty-nine million, six hundred fifty-eight thousand, one hundred sixty-seven".