10661915 has 12 divisors (see below), whose sum is σ = 14063952. Its totient is φ = 7753680.

The previous prime is 10661897. The next prime is 10661921. The reversal of 10661915 is 51916601.

It is not a de Polignac number, because 10661915 - 2²⁰ = 9613339 is a prime.

It is a super-2 number, since 2×10661915² = 227352862934450, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8207 + ... + 9416.

It is an arithmetic number, because the mean of its divisors is an integer number (1171996).

Almost surely, 2^10661915 is an apocalyptic number.

10661915 is a deficient number, since it is larger than the sum of its proper divisors (3402037).

10661915 is a wasteful number, since it uses less digits than its factorization.

10661915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17650 (or 17639 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 29.

The square root of 10661915 is about 3265.2587952565. The cubic root of 10661915 is about 220.0957916180.

The spelling of 10661915 in words is "ten million, six hundred sixty-one thousand, nine hundred fifteen".