9572661 has 20 divisors (see below), whose sum is σ = 16343712. Its totient is φ = 5469768.

The previous prime is 9572659. The next prime is 9572663. The reversal of 9572661 is 1662759.

It is an interprime number because it is at equal distance from previous prime (9572659) and next prime (9572663).

It is not a de Polignac number, because 9572661 - 2¹ = 9572659 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9572663) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 7875 + ... + 9008.

Almost surely, 2^9572661 is an apocalyptic number.

It is an amenable number.

9572661 is a deficient number, since it is larger than the sum of its proper divisors (6771051).

9572661 is a wasteful number, since it uses less digits than its factorization.

9572661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16902 (or 16893 counting only the distinct ones).

The product of its digits is 22680, while the sum is 36.

The square root of 9572661 is about 3093.9717193278. The cubic root of 9572661 is about 212.3297718603.

The spelling of 9572661 in words is "nine million, five hundred seventy-two thousand, six hundred sixty-one".