977660 has 12 divisors (see below), whose sum is σ = 2053128. Its totient is φ = 391056.

The previous prime is 977629. The next prime is 977671. The reversal of 977660 is 66779.

It is a nialpdrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 977660.

It is a congruent number.

It is an unprimeable number.

977660 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24422 + ... + 24461.

It is an arithmetic number, because the mean of its divisors is an integer number (171094).

2⁹⁷⁷⁶⁶⁰ is an apocalyptic number.

It is an amenable number.

977660 is an abundant number, since it is smaller than the sum of its proper divisors (1075468).

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

977660 is a wasteful number, since it uses less digits than its factorization.

977660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48892 (or 48890 counting only the distinct ones).

The product of its (nonzero) digits is 15876, while the sum is 35.

The square root of 977660 is about 988.7669088314. The cubic root of 977660 is about 99.2497181837.

The spelling of 977660 in words is "nine hundred seventy-seven thousand, six hundred sixty".