977145732 has 18 divisors (see below), whose sum is σ = 2470007358. Its totient is φ = 325715232.

The previous prime is 977145713. The next prime is 977145751. The reversal of 977145732 is 237541779.

977145732 is a `hidden beast` number, since 9 + 7 + 71 + 4 + 573 + 2 = 666.

977145732 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (977145713) and next prime (977145751).

It can be written as a sum of positive squares in only one way, i.e., 807469056 + 169676676 = 28416^2 + 13026^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13571433 + ... + 13571504.

It is an arithmetic number, because the mean of its divisors is an integer number (137222631).

Almost surely, 2^977145732 is an apocalyptic number.

It is an amenable number.

977145732 is an abundant number, since it is smaller than the sum of its proper divisors (1492861626).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

977145732 is a wasteful number, since it uses less digits than its factorization.

977145732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27142947 (or 27142942 counting only the distinct ones).

The product of its digits is 370440, while the sum is 45.

The square root of 977145732 is about 31259.3303191223. The cubic root of 977145732 is about 992.3231270997.

The spelling of 977145732 in words is "nine hundred seventy-seven million, one hundred forty-five thousand, seven hundred thirty-two".