977266556 has 48 divisors (see below), whose sum is σ = 2100462336. Its totient is φ = 388295424.

The previous prime is 977266531. The next prime is 977266571. The reversal of 977266556 is 655662779.

It is a super-2 number, since 2×977266556² = 1910099842952202272, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 977266498 and 977266507.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16571 + ... + 47213.

It is an arithmetic number, because the mean of its divisors is an integer number (43759632).

Almost surely, 2^977266556 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 977266556, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1050231168).

977266556 is an abundant number, since it is smaller than the sum of its proper divisors (1123195780).

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

977266556 is a wasteful number, since it uses less digits than its factorization.

977266556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30738 (or 30736 counting only the distinct ones).

The product of its digits is 4762800, while the sum is 53.

The square root of 977266556 is about 31261.2628663655. The cubic root of 977266556 is about 992.3640256420.

The spelling of 977266556 in words is "nine hundred seventy-seven million, two hundred sixty-six thousand, five hundred fifty-six".