977320 has 32 divisors (see below), whose sum is σ = 2245320. Its totient is φ = 382720.

The previous prime is 977299. The next prime is 977323. The reversal of 977320 is 23779.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 799236 + 178084 = 894^2 + 422^2 .

It is an Ulam number.

It is a plaindrome in base 15.

It is a nialpdrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (977323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1890 + ... + 2350.

2⁹⁷⁷³²⁰ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 977320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1122660).

977320 is an abundant number, since it is smaller than the sum of its proper divisors (1268000).

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

977320 is a wasteful number, since it uses less digits than its factorization.

977320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 525 (or 521 counting only the distinct ones).

The product of its (nonzero) digits is 2646, while the sum is 28.

The square root of 977320 is about 988.5949625605. The cubic root of 977320 is about 99.2382115192.

The spelling of 977320 in words is "nine hundred seventy-seven thousand, three hundred twenty".