977140 has 12 divisors (see below), whose sum is σ = 2052036. Its totient is φ = 390848.

The previous prime is 977107. The next prime is 977147. The reversal of 977140 is 41779.

It can be written as a sum of positive squares in 2 ways, for example, as 767376 + 209764 = 876^2 + 458^2 .

It is a junction number, because it is equal to n+sod(n) for n = 977099 and 977108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (977147) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24409 + ... + 24448.

It is an arithmetic number, because the mean of its divisors is an integer number (171003).

2⁹⁷⁷¹⁴⁰ is an apocalyptic number.

It is an amenable number.

977140 is an abundant number, since it is smaller than the sum of its proper divisors (1074896).

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

977140 is a wasteful number, since it uses less digits than its factorization.

977140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48866 (or 48864 counting only the distinct ones).

The product of its (nonzero) digits is 1764, while the sum is 28.

The square root of 977140 is about 988.5039200732. The cubic root of 977140 is about 99.2321186752.

The spelling of 977140 in words is "nine hundred seventy-seven thousand, one hundred forty".