677540144 has 40 divisors (see below), whose sum is σ = 1327534080. Its totient is φ = 334974528.

The previous prime is 677540131. The next prime is 677540147. The reversal of 677540144 is 441045776.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 677540098 and 677540107.

It is not an unprimeable number, because it can be changed into a prime (677540147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 622769 + ... + 623855.

It is an arithmetic number, because the mean of its divisors is an integer number (33188352).

Almost surely, 2^677540144 is an apocalyptic number.

It is an amenable number.

677540144 is a deficient number, since it is larger than the sum of its proper divisors (649993936).

677540144 is a wasteful number, since it uses less digits than its factorization.

677540144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1497 (or 1491 counting only the distinct ones).

The product of its (nonzero) digits is 94080, while the sum is 38.

The square root of 677540144 is about 26029.6013031318. The cubic root of 677540144 is about 878.3043034844.

The spelling of 677540144 in words is "six hundred seventy-seven million, five hundred forty thousand, one hundred forty-four".