97775969 has 2 divisors, whose sum is σ = 97775970. Its totient is φ = 97775968.

The previous prime is 97775963. The next prime is 97775971. The reversal of 97775969 is 96957779.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 96275344 + 1500625 = 9812^2 + 1225^2 .

It is a cyclic number.

It is not a de Polignac number, because 97775969 - 2¹⁶ = 97710433 is a prime.

It is a super-2 number, since 2×97775969² = 19120280227777922, which contains 22 as substring.

Together with 97775971, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (97775963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48887984 + 48887985.

It is an arithmetic number, because the mean of its divisors is an integer number (48887985).

Almost surely, 2^97775969 is an apocalyptic number.

It is an amenable number.

97775969 is a deficient number, since it is larger than the sum of its proper divisors (1).

97775969 is an equidigital number, since it uses as much as digits as its factorization.

97775969 is an odious number, because the sum of its binary digits is odd.

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

The square root of 97775969 is about 9888.1731882082. The cubic root of 97775969 is about 460.6920412060.

The spelling of 97775969 in words is "ninety-seven million, seven hundred seventy-five thousand, nine hundred sixty-nine".