980630661 has 16 divisors (see below), whose sum is σ = 1341063360. Its totient is φ = 637015680.

The previous prime is 980630659. The next prime is 980630689. The reversal of 980630661 is 166036089.

It is a happy number.

It is not a de Polignac number, because 980630661 - 2¹ = 980630659 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (980630561) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 104095 + ... + 113123.

It is an arithmetic number, because the mean of its divisors is an integer number (83816460).

Almost surely, 2^980630661 is an apocalyptic number.

It is an amenable number.

980630661 is a deficient number, since it is larger than the sum of its proper divisors (360432699).

980630661 is a wasteful number, since it uses less digits than its factorization.

980630661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9956.

The product of its (nonzero) digits is 46656, while the sum is 39.

The square root of 980630661 is about 31315.0229283007. The cubic root of 980630661 is about 993.5014135224.

The spelling of 980630661 in words is "nine hundred eighty million, six hundred thirty thousand, six hundred sixty-one".