694785312 has 144 divisors (see below), whose sum is σ = 2239997760. Its totient is φ = 202507776.

The previous prime is 694785283. The next prime is 694785317. The reversal of 694785312 is 213587496.

It is a tau number, because it is divible by the number of its divisors (144).

It is not an unprimeable number, because it can be changed into a prime (694785317) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 66253 + ... + 76019.

It is an arithmetic number, because the mean of its divisors is an integer number (15555540).

Almost surely, 2^694785312 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 694785312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1119998880).

694785312 is an abundant number, since it is smaller than the sum of its proper divisors (1545212448).

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

694785312 is a wasteful number, since it uses less digits than its factorization.

694785312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9815 (or 9804 counting only the distinct ones).

The product of its digits is 362880, while the sum is 45.

The square root of 694785312 is about 26358.7805484245. The cubic root of 694785312 is about 885.6936742837.

The spelling of 694785312 in words is "six hundred ninety-four million, seven hundred eighty-five thousand, three hundred twelve".