10664661 has 16 divisors (see below), whose sum is σ = 17207424. Its totient is φ = 5735424.

The previous prime is 10664659. The next prime is 10664699. The reversal of 10664661 is 16646601.

It is not a de Polignac number, because 10664661 - 2¹ = 10664659 is a prime.

It is a super-2 number, since 2×10664661² = 227469988489842, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10664461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14580 + ... + 15293.

It is an arithmetic number, because the mean of its divisors is an integer number (1075464).

Almost surely, 2^10664661 is an apocalyptic number.

It is an amenable number.

10664661 is a deficient number, since it is larger than the sum of its proper divisors (6542763).

10664661 is a wasteful number, since it uses less digits than its factorization.

10664661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29900.

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 10664661 is about 3265.6792555302. The cubic root of 10664661 is about 220.1146853835.

It can be divided in two parts, 10664 and 661, that added together give a triangular number (11325 = T₁₅₀).

The spelling of 10664661 in words is "ten million, six hundred sixty-four thousand, six hundred sixty-one".