10661279 has 2 divisors, whose sum is σ = 10661280. Its totient is φ = 10661278.

The previous prime is 10661263. The next prime is 10661281. The reversal of 10661279 is 97216601.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 10661279 - 2⁴ = 10661263 is a prime.

It is a super-2 number, since 2×10661279² = 227325739831682, which contains 22 as substring.

Together with 10661281, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10661219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5330639 + 5330640.

It is an arithmetic number, because the mean of its divisors is an integer number (5330640).

Almost surely, 2^10661279 is an apocalyptic number.

10661279 is a deficient number, since it is larger than the sum of its proper divisors (1).

10661279 is an equidigital number, since it uses as much as digits as its factorization.

10661279 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4536, while the sum is 32.

The square root of 10661279 is about 3265.1614048926. The cubic root of 10661279 is about 220.0914151776.

The spelling of 10661279 in words is "ten million, six hundred sixty-one thousand, two hundred seventy-nine".