677948388 has 96 divisors (see below), whose sum is σ = 1745221632. Its totient is φ = 203558400.

The previous prime is 677948377. The next prime is 677948413. The reversal of 677948388 is 883849776.

It is a super-2 number, since 2×677948388² = 919228033583597088, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1817370 + ... + 1817742.

It is an arithmetic number, because the mean of its divisors is an integer number (18179392).

Almost surely, 2^677948388 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 677948388, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (872610816).

677948388 is an abundant number, since it is smaller than the sum of its proper divisors (1067273244).

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

677948388 is a wasteful number, since it uses less digits than its factorization.

677948388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 645 (or 643 counting only the distinct ones).

The product of its digits is 16257024, while the sum is 60.

The square root of 677948388 is about 26037.4420402619. The cubic root of 677948388 is about 878.4806721092.

The spelling of 677948388 in words is "six hundred seventy-seven million, nine hundred forty-eight thousand, three hundred eighty-eight".