10661517 has 16 divisors (see below), whose sum is σ = 16181760. Its totient is φ = 6933600.

The previous prime is 10661507. The next prime is 10661543. The reversal of 10661517 is 71516601.

10661517 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 10661517 - 2⁷ = 10661389 is a prime.

It is a super-2 number, since 2×10661517² = 227335889482578, which contains 22 as substring.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10661507) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3709 + ... + 5922.

It is an arithmetic number, because the mean of its divisors is an integer number (1011360).

Almost surely, 2^10661517 is an apocalyptic number.

It is an amenable number.

10661517 is a deficient number, since it is larger than the sum of its proper divisors (5520243).

10661517 is an equidigital number, since it uses as much as digits as its factorization.

10661517 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9681 (or 9675 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 27.

The square root of 10661517 is about 3265.1978500544. The cubic root of 10661517 is about 220.0930529226.

The spelling of 10661517 in words is "ten million, six hundred sixty-one thousand, five hundred seventeen".