97620569 has 2 divisors, whose sum is σ = 97620570. Its totient is φ = 97620568.

The previous prime is 97620563. The next prime is 97620571. The reversal of 97620569 is 96502679.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 92833225 + 4787344 = 9635^2 + 2188^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-97620569 is a prime.

It is a super-2 number, since 2×97620569² = 19059550983767522, which contains 22 as substring.

Together with 97620571, 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 (97620563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48810284 + 48810285.

It is an arithmetic number, because the mean of its divisors is an integer number (48810285).

Almost surely, 2^97620569 is an apocalyptic number.

It is an amenable number.

97620569 is a deficient number, since it is larger than the sum of its proper divisors (1).

97620569 is an equidigital number, since it uses as much as digits as its factorization.

97620569 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 204120, while the sum is 44.

The square root of 97620569 is about 9880.3121914239. The cubic root of 97620569 is about 460.4478451954.

It can be divided in two parts, 97620 and 569, that added together give a palindrome (98189).

The spelling of 97620569 in words is "ninety-seven million, six hundred twenty thousand, five hundred sixty-nine".