977927616 has 168 divisors, whose sum is σ = 2958961824. Its totient is φ = 308183040.

The previous prime is 977927611. The next prime is 977927627. The reversal of 977927616 is 616729779.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (977927611) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1284676 + ... + 1285436.

It is an arithmetic number, because the mean of its divisors is an integer number (17612868).

Almost surely, 2^977927616 is an apocalyptic number.

977927616 is a gapful number since it is divisible by the number (96) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 977927616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1479480912).

977927616 is an abundant number, since it is smaller than the sum of its proper divisors (1981034208).

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

977927616 is a wasteful number, since it uses less digits than its factorization.

977927616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 899 (or 886 counting only the distinct ones).

The product of its digits is 2000376, while the sum is 54.

The square root of 977927616 is about 31271.8342282636. The cubic root of 977927616 is about 992.5877327078.

The spelling of 977927616 in words is "nine hundred seventy-seven million, nine hundred twenty-seven thousand, six hundred sixteen".