677198090 has 16 divisors (see below), whose sum is σ = 1244892672. Its totient is φ = 265115664.

The previous prime is 677198083. The next prime is 677198129. The reversal of 677198090 is 90891776.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 719954 + ... + 720893.

It is an arithmetic number, because the mean of its divisors is an integer number (77805792).

Almost surely, 2^677198090 is an apocalyptic number.

677198090 is a deficient number, since it is larger than the sum of its proper divisors (567694582).

677198090 is a wasteful number, since it uses less digits than its factorization.

677198090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1440901.

The product of its (nonzero) digits is 190512, while the sum is 47.

The square root of 677198090 is about 26023.0299926815. The cubic root of 677198090 is about 878.1564755544.

The spelling of 677198090 in words is "six hundred seventy-seven million, one hundred ninety-eight thousand, ninety".