677638870 has 16 divisors (see below), whose sum is σ = 1291500288. Its totient is φ = 255111040.

The previous prime is 677638861. The next prime is 677638873. The reversal of 677638870 is 78836776.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (677638873) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1992886 + ... + 1993225.

It is an arithmetic number, because the mean of its divisors is an integer number (80718768).

Almost surely, 2^677638870 is an apocalyptic number.

677638870 is a deficient number, since it is larger than the sum of its proper divisors (613861418).

677638870 is a wasteful number, since it uses less digits than its factorization.

677638870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3986135.

The product of its (nonzero) digits is 2370816, while the sum is 52.

The square root of 677638870 is about 26031.4976518832. The cubic root of 677638870 is about 878.3469613550.

The spelling of 677638870 in words is "six hundred seventy-seven million, six hundred thirty-eight thousand, eight hundred seventy".