677991700 has 144 divisors (see below), whose sum is σ = 1633895424. Its totient is φ = 243302400.

The previous prime is 677991673. The next prime is 677991701. The reversal of 677991700 is 7199776.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (677991701) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2637972 + ... + 2638228.

It is an arithmetic number, because the mean of its divisors is an integer number (11346496).

Almost surely, 2^677991700 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 677991700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (816947712).

677991700 is an abundant number, since it is smaller than the sum of its proper divisors (955903724).

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

677991700 is a wasteful number, since it uses less digits than its factorization.

677991700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 362 (or 355 counting only the distinct ones).

The product of its (nonzero) digits is 166698, while the sum is 46.

The square root of 677991700 is about 26038.2737523055. The cubic root of 677991700 is about 878.4993795041.

The spelling of 677991700 in words is "six hundred seventy-seven million, nine hundred ninety-one thousand, seven hundred".