977812 has 24 divisors (see below), whose sum is σ = 1899072. Its totient is φ = 436800.

The previous prime is 977803. The next prime is 977813. The reversal of 977812 is 218779.

977812 is nontrivially palindromic in base 5.

It is a super-2 number, since 2×977812² = 1912232614688, which contains 22 as substring.

It is a nialpdrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (977813) by changing a digit.

977812 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 7 ways as a sum of consecutive naturals, for example, 2968 + ... + 3280.

It is an arithmetic number, because the mean of its divisors is an integer number (79128).

2⁹⁷⁷⁸¹² is an apocalyptic number.

It is an amenable number.

977812 is a deficient number, since it is larger than the sum of its proper divisors (921260).

977812 is a wasteful number, since it uses less digits than its factorization.

977812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 399 (or 397 counting only the distinct ones).

The product of its digits is 7056, while the sum is 34.

The square root of 977812 is about 988.8437692578. The cubic root of 977812 is about 99.2548614766.

The spelling of 977812 in words is "nine hundred seventy-seven thousand, eight hundred twelve".