694896640 has 96 divisors (see below), whose sum is σ = 1690416000. Its totient is φ = 274120704.

The previous prime is 694896623. The next prime is 694896661. The reversal of 694896640 is 46698496.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 808531 + ... + 809389.

It is an arithmetic number, because the mean of its divisors is an integer number (17608500).

Almost surely, 2^694896640 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 694896640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (845208000).

694896640 is an abundant number, since it is smaller than the sum of its proper divisors (995519360).

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

694896640 is an equidigital number, since it uses as much as digits as its factorization.

694896640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 965 (or 945 counting only the distinct ones).

The product of its (nonzero) digits is 2239488, while the sum is 52.

The square root of 694896640 is about 26360.8922459009. The cubic root of 694896640 is about 885.7409777398.

The spelling of 694896640 in words is "six hundred ninety-four million, eight hundred ninety-six thousand, six hundred forty".