694213632 has 352 divisors, whose sum is σ = 2499632640. Its totient is φ = 185794560.

The previous prime is 694213631. The next prime is 694213657. The reversal of 694213632 is 236312496.

694213632 is a `hidden beast` number, since 6 + 9 + 4 + 2 + 13 + 632 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (694213631) 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, 3290007 + ... + 3290217.

Almost surely, 2^694213632 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 694213632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1249816320).

694213632 is an abundant number, since it is smaller than the sum of its proper divisors (1805419008).

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

694213632 is a wasteful number, since it uses less digits than its factorization.

694213632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264 (or 240 counting only the distinct ones).

The product of its digits is 46656, while the sum is 36.

The square root of 694213632 is about 26347.9341125637. The cubic root of 694213632 is about 885.4506868518.

The spelling of 694213632 in words is "six hundred ninety-four million, two hundred thirteen thousand, six hundred thirty-two".