977695380 has 96 divisors (see below), whose sum is σ = 3070327680. Its totient is φ = 258266880.

The previous prime is 977695379. The next prime is 977695387. The reversal of 977695380 is 83596779.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (977695387) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 49320 + ... + 66240.

It is an arithmetic number, because the mean of its divisors is an integer number (31982580).

Almost surely, 2^977695380 is an apocalyptic number.

977695380 is a gapful number since it is divisible by the number (90) 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 977695380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1535163840).

977695380 is an abundant number, since it is smaller than the sum of its proper divisors (2092632300).

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

977695380 is a wasteful number, since it uses less digits than its factorization.

977695380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17046 (or 17038 counting only the distinct ones).

The product of its (nonzero) digits is 2857680, while the sum is 54.

The square root of 977695380 is about 31268.1208261705. The cubic root of 977695380 is about 992.5091540036.

The spelling of 977695380 in words is "nine hundred seventy-seven million, six hundred ninety-five thousand, three hundred eighty".