97699451 has 2 divisors, whose sum is σ = 97699452. Its totient is φ = 97699450.

The previous prime is 97699447. The next prime is 97699489. The reversal of 97699451 is 15499679.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 97699451 - 2² = 97699447 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 97699451.

It is not a weakly prime, because it can be changed into another prime (97699951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48849725 + 48849726.

It is an arithmetic number, because the mean of its divisors is an integer number (48849726).

Almost surely, 2^97699451 is an apocalyptic number.

97699451 is a deficient number, since it is larger than the sum of its proper divisors (1).

97699451 is an equidigital number, since it uses as much as digits as its factorization.

97699451 is an evil number, because the sum of its binary digits is even.

The product of its digits is 612360, while the sum is 50.

The square root of 97699451 is about 9884.3032632553. The cubic root of 97699451 is about 460.5718329596.

The spelling of 97699451 in words is "ninety-seven million, six hundred ninety-nine thousand, four hundred fifty-one".