694449152 has 44 divisors (see below), whose sum is σ = 1425817380. Its totient is φ = 337821696.

The previous prime is 694449149. The next prime is 694449157. The reversal of 694449152 is 251944496.

It can be written as a sum of positive squares in 2 ways, for example, as 498896896 + 195552256 = 22336^2 + 13984^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (694449157) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28724 + ... + 47052.

Almost surely, 2^694449152 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 694449152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (712908690).

694449152 is an abundant number, since it is smaller than the sum of its proper divisors (731368228).

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

694449152 is a wasteful number, since it uses less digits than its factorization.

694449152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18386 (or 18368 counting only the distinct ones).

The product of its digits is 311040, while the sum is 44.

The square root of 694449152 is about 26352.4031541717. The cubic root of 694449152 is about 885.5508086574.

The spelling of 694449152 in words is "six hundred ninety-four million, four hundred forty-nine thousand, one hundred fifty-two".