977628 has 24 divisors (see below), whose sum is σ = 2297232. Its totient is φ = 323584.

The previous prime is 977611. The next prime is 977629. The reversal of 977628 is 826779.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (977629) by changing a digit.

977628 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2926 + ... + 3242.

It is an arithmetic number, because the mean of its divisors is an integer number (95718).

2⁹⁷⁷⁶²⁸ is an apocalyptic number.

It is an amenable number.

977628 is an abundant number, since it is smaller than the sum of its proper divisors (1319604).

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

977628 is a wasteful number, since it uses less digits than its factorization.

977628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 581 (or 579 counting only the distinct ones).

The product of its digits is 42336, while the sum is 39.

The square root of 977628 is about 988.7507269277. The cubic root of 977628 is about 99.2486353172.

The spelling of 977628 in words is "nine hundred seventy-seven thousand, six hundred twenty-eight".