977620 has 24 divisors (see below), whose sum is σ = 2346624. Its totient is φ = 335136.

The previous prime is 977611. The next prime is 977629. The reversal of 977620 is 26779.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (977611) and next prime (977629).

It is an Ulam number.

It is a nialpdrome in base 10.

It is a congruent number.

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

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3352 + ... + 3631.

It is an arithmetic number, because the mean of its divisors is an integer number (97776).

2⁹⁷⁷⁶²⁰ is an apocalyptic number.

It is an amenable number.

977620 is an abundant number, since it is smaller than the sum of its proper divisors (1369004).

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

977620 is a wasteful number, since it uses less digits than its factorization.

977620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6999 (or 6997 counting only the distinct ones).

The product of its (nonzero) digits is 5292, while the sum is 31.

The square root of 977620 is about 988.7466814104. The cubic root of 977620 is about 99.2483645969.

The spelling of 977620 in words is "nine hundred seventy-seven thousand, six hundred twenty".