677945574 has 48 divisors (see below), whose sum is σ = 1563634800. Its totient is φ = 211673088.

The previous prime is 677945563. The next prime is 677945581. The reversal of 677945574 is 475549776.

677945574 is a `hidden beast` number, since 67 + 7 + 9 + 4 + 5 + 574 = 666.

It is a super-2 number, since 2×677945574² = 919220402612378952, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 677945574.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19302 + ... + 41574.

It is an arithmetic number, because the mean of its divisors is an integer number (32575725).

Almost surely, 2^677945574 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 677945574, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (781817400).

677945574 is an abundant number, since it is smaller than the sum of its proper divisors (885689226).

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

677945574 is a wasteful number, since it uses less digits than its factorization.

677945574 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22389 (or 22386 counting only the distinct ones).

The product of its digits is 7408800, while the sum is 54.

The square root of 677945574 is about 26037.3880026396. The cubic root of 677945574 is about 878.4794566538.

The spelling of 677945574 in words is "six hundred seventy-seven million, nine hundred forty-five thousand, five hundred seventy-four".