677791640 has 16 divisors (see below), whose sum is σ = 1525031280. Its totient is φ = 271116640.

The previous prime is 677791637. The next prime is 677791643. The reversal of 677791640 is 46197776.

It is an interprime number because it is at equal distance from previous prime (677791637) and next prime (677791643).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (677791643) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 8472356 + ... + 8472435.

It is an arithmetic number, because the mean of its divisors is an integer number (95314455).

Almost surely, 2^677791640 is an apocalyptic number.

It is an amenable number.

677791640 is an abundant number, since it is smaller than the sum of its proper divisors (847239640).

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

677791640 is a wasteful number, since it uses less digits than its factorization.

677791640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16944802 (or 16944798 counting only the distinct ones).

The product of its (nonzero) digits is 444528, while the sum is 47.

The square root of 677791640 is about 26034.4318163466. The cubic root of 677791640 is about 878.4129625781.

The spelling of 677791640 in words is "six hundred seventy-seven million, seven hundred ninety-one thousand, six hundred forty".