10661597 has 2 divisors, whose sum is σ = 10661598. Its totient is φ = 10661596.

The previous prime is 10661591. The next prime is 10661611. The reversal of 10661597 is 79516601.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10278436 + 383161 = 3206^2 + 619^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10661597 is a prime.

It is a super-2 number, since 2×10661597² = 227339301180818, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10661591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5330798 + 5330799.

It is an arithmetic number, because the mean of its divisors is an integer number (5330799).

Almost surely, 2^10661597 is an apocalyptic number.

It is an amenable number.

10661597 is a deficient number, since it is larger than the sum of its proper divisors (1).

10661597 is an equidigital number, since it uses as much as digits as its factorization.

10661597 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11340, while the sum is 35.

The square root of 10661597 is about 3265.2101004376. The cubic root of 10661597 is about 220.0936034196.

The spelling of 10661597 in words is "ten million, six hundred sixty-one thousand, five hundred ninety-seven".