9880661 has 8 divisors (see below), whose sum is σ = 11656704. Its totient is φ = 8195760.

The previous prime is 9880643. The next prime is 9880667. The reversal of 9880661 is 1660889.

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 9880661 - 2¹⁴ = 9864277 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9880667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22550 + ... + 22983.

It is an arithmetic number, because the mean of its divisors is an integer number (1457088).

Almost surely, 2^9880661 is an apocalyptic number.

It is an amenable number.

9880661 is a deficient number, since it is larger than the sum of its proper divisors (1776043).

9880661 is a wasteful number, since it uses less digits than its factorization.

9880661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45571.

The product of its (nonzero) digits is 20736, while the sum is 38.

The square root of 9880661 is about 3143.3518733988. The cubic root of 9880661 is about 214.5830100560.

The spelling of 9880661 in words is "nine million, eight hundred eighty thousand, six hundred sixty-one".