10661917 has 4 divisors (see below), whose sum is σ = 12185056. Its totient is φ = 9138780.

The previous prime is 10661897. The next prime is 10661921. The reversal of 10661917 is 71916601.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 10661917 - 2⁷ = 10661789 is a prime.

It is a super-2 number, since 2×10661917² = 227352948229778, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10662917) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 761559 + ... + 761572.

It is an arithmetic number, because the mean of its divisors is an integer number (3046264).

Almost surely, 2^10661917 is an apocalyptic number.

It is an amenable number.

10661917 is a deficient number, since it is larger than the sum of its proper divisors (1523139).

10661917 is an equidigital number, since it uses as much as digits as its factorization.

10661917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1523138.

The product of its (nonzero) digits is 2268, while the sum is 31.

The square root of 10661917 is about 3265.2591015109. The cubic root of 10661917 is about 220.0958053802.

The spelling of 10661917 in words is "ten million, six hundred sixty-one thousand, nine hundred seventeen".