10506661 has 8 divisors (see below), whose sum is σ = 11656800. Its totient is φ = 9389040.

The previous prime is 10506659. The next prime is 10506673. The reversal of 10506661 is 16660501.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 10506661 - 2¹ = 10506659 is a prime.

It is a super-2 number, since 2×10506661² = 220779850737842, 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 (10506611) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7446 + ... + 8743.

It is an arithmetic number, because the mean of its divisors is an integer number (1457100).

Almost surely, 2^10506661 is an apocalyptic number.

10506661 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

10506661 is a deficient number, since it is larger than the sum of its proper divisors (1150139).

10506661 is a wasteful number, since it uses less digits than its factorization.

10506661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16259.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 10506661 is about 3241.3980008632. The cubic root of 10506661 is about 219.0222519316.

The spelling of 10506661 in words is "ten million, five hundred six thousand, six hundred sixty-one".