988304661 has 6 divisors (see below), whose sum is σ = 1427551190. Its totient is φ = 658869768.

The previous prime is 988304623. The next prime is 988304671. The reversal of 988304661 is 166403889.

988304661 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 987907761 + 396900 = 31431^2 + 630^2 .

It is not a de Polignac number, because 988304661 - 2⁷ = 988304533 is a prime.

It is a super-2 number, since 2×988304661² = 1953492205908649842, 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 (988304671) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 54905806 + ... + 54905823.

Almost surely, 2^988304661 is an apocalyptic number.

It is an amenable number.

988304661 is a deficient number, since it is larger than the sum of its proper divisors (439246529).

988304661 is a wasteful number, since it uses less digits than its factorization.

988304661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109811635 (or 109811632 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 45.

The square root of 988304661 is about 31437.3131962641. The cubic root of 988304661 is about 996.0862562594.

The spelling of 988304661 in words is "nine hundred eighty-eight million, three hundred four thousand, six hundred sixty-one".