651556967 has 2 divisors, whose sum is σ = 651556968. Its totient is φ = 651556966.

The previous prime is 651556933. The next prime is 651556979. The reversal of 651556967 is 769655156.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 651556967 - 2¹⁰ = 651555943 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (651556567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 325778483 + 325778484.

It is an arithmetic number, because the mean of its divisors is an integer number (325778484).

Almost surely, 2^651556967 is an apocalyptic number.

651556967 is a deficient number, since it is larger than the sum of its proper divisors (1).

651556967 is an equidigital number, since it uses as much as digits as its factorization.

651556967 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1701000, while the sum is 50.

The square root of 651556967 is about 25525.6139397273. The cubic root of 651556967 is about 866.9301977845.

The spelling of 651556967 in words is "six hundred fifty-one million, five hundred fifty-six thousand, nine hundred sixty-seven".