10661636 has 6 divisors (see below), whose sum is σ = 18657870. Its totient is φ = 5330816.

The previous prime is 10661611. The next prime is 10661653. The reversal of 10661636 is 63616601.

It can be written as a sum of positive squares in only one way, i.e., 9339136 + 1322500 = 3056^2 + 1150^2 .

It is a super-2 number, since 2×10661636² = 227340964392992, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 10661599 and 10661608.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1332701 + ... + 1332708.

It is an arithmetic number, because the mean of its divisors is an integer number (3109645).

Almost surely, 2^10661636 is an apocalyptic number.

It is an amenable number.

10661636 is a deficient number, since it is larger than the sum of its proper divisors (7996234).

10661636 is a wasteful number, since it uses less digits than its factorization.

10661636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2665413 (or 2665411 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 29.

The square root of 10661636 is about 3265.2160724828. The cubic root of 10661636 is about 220.0938717859.

The spelling of 10661636 in words is "ten million, six hundred sixty-one thousand, six hundred thirty-six".