694877680 has 160 divisors (see below), whose sum is σ = 1899878400. Its totient is φ = 231469056.

The previous prime is 694877629. The next prime is 694877681. The reversal of 694877680 is 86778496.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (694877681) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4999051 + ... + 4999189.

It is an arithmetic number, because the mean of its divisors is an integer number (11874240).

Almost surely, 2^694877680 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 694877680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (949939200).

694877680 is an abundant number, since it is smaller than the sum of its proper divisors (1205000720).

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

694877680 is a wasteful number, since it uses less digits than its factorization.

694877680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 351 (or 345 counting only the distinct ones).

The product of its (nonzero) digits is 4064256, while the sum is 55.

The square root of 694877680 is about 26360.5326198087. The cubic root of 694877680 is about 885.7329219606.

The spelling of 694877680 in words is "six hundred ninety-four million, eight hundred seventy-seven thousand, six hundred eighty".