10661651 has 16 divisors (see below), whose sum is σ = 14316288. Its totient is φ = 7668000.

The previous prime is 10661611. The next prime is 10661653. The reversal of 10661651 is 15616601.

10661651 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 10661651 - 2¹⁰ = 10660627 is a prime.

It is a super-2 number, since 2×10661651² = 227341604091602, which contains 22 as substring.

It is a Smith number, since the sum of its digits (26) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 10661651.

It is not an unprimeable number, because it can be changed into a prime (10661653) 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, 4325 + ... + 6326.

It is an arithmetic number, because the mean of its divisors is an integer number (894768).

Almost surely, 2^10661651 is an apocalyptic number.

10661651 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

10661651 is a deficient number, since it is larger than the sum of its proper divisors (3654637).

10661651 is a wasteful number, since it uses less digits than its factorization.

10661651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10682.

The product of its (nonzero) digits is 1080, while the sum is 26.

The square root of 10661651 is about 3265.2183694203. The cubic root of 10661651 is about 220.0939750035.

The spelling of 10661651 in words is "ten million, six hundred sixty-one thousand, six hundred fifty-one".