97567979 has 2 divisors, whose sum is σ = 97567980. Its totient is φ = 97567978.

The previous prime is 97567963. The next prime is 97567997. The reversal of 97567979 is 97976579.

Together with next prime (97567997) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 97567979 - 2⁴ = 97567963 is a prime.

It is a super-2 number, since 2×97567979² = 19039021052288882, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (97567999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48783989 + 48783990.

It is an arithmetic number, because the mean of its divisors is an integer number (48783990).

Almost surely, 2^97567979 is an apocalyptic number.

97567979 is a deficient number, since it is larger than the sum of its proper divisors (1).

97567979 is an equidigital number, since it uses as much as digits as its factorization.

97567979 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7501410, while the sum is 59.

The square root of 97567979 is about 9877.6504797447. The cubic root of 97567979 is about 460.3651464292.

The spelling of 97567979 in words is "ninety-seven million, five hundred sixty-seven thousand, nine hundred seventy-nine".