65659697 has 2 divisors, whose sum is σ = 65659698. Its totient is φ = 65659696.

The previous prime is 65659673. The next prime is 65659709. The reversal of 65659697 is 79695656.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 52475536 + 13184161 = 7244^2 + 3631^2 .

It is a cyclic number.

It is not a de Polignac number, because 65659697 - 2¹⁴ = 65643313 is a prime.

It is a super-2 number, since 2×65659697² = 8622391620263618, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (65659597) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32829848 + 32829849.

It is an arithmetic number, because the mean of its divisors is an integer number (32829849).

Almost surely, 2^65659697 is an apocalyptic number.

It is an amenable number.

65659697 is a deficient number, since it is larger than the sum of its proper divisors (1).

65659697 is an equidigital number, since it uses as much as digits as its factorization.

65659697 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3061800, while the sum is 53.

The square root of 65659697 is about 8103.0671353507. The cubic root of 65659697 is about 403.4282361354.

The spelling of 65659697 in words is "sixty-five million, six hundred fifty-nine thousand, six hundred ninety-seven".