677498640 has 320 divisors, whose sum is σ = 2629165056. Its totient is φ = 140507136.

The previous prime is 677498639. The next prime is 677498651. The reversal of 677498640 is 46894776.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1463049 + ... + 1463511.

Almost surely, 2^677498640 is an apocalyptic number.

677498640 is a gapful number since it is divisible by the number (60) 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 677498640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1314582528).

677498640 is an abundant number, since it is smaller than the sum of its proper divisors (1951666416).

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

677498640 is a wasteful number, since it uses less digits than its factorization.

677498640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 566 (or 560 counting only the distinct ones).

The product of its (nonzero) digits is 2032128, while the sum is 51.

The square root of 677498640 is about 26028.8040447501. The cubic root of 677498640 is about 878.2863690557.

The spelling of 677498640 in words is "six hundred seventy-seven million, four hundred ninety-eight thousand, six hundred forty".