694640334 has 16 divisors (see below), whose sum is σ = 1394566272. Its totient is φ = 230665848.

The previous prime is 694640329. The next prime is 694640347. The reversal of 694640334 is 433046496.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 694640292 and 694640301.

It is a congruent number.

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, 218524 + ... + 221679.

It is an arithmetic number, because the mean of its divisors is an integer number (87160392).

Almost surely, 2^694640334 is an apocalyptic number.

694640334 is an abundant number, since it is smaller than the sum of its proper divisors (699925938).

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

694640334 is a wasteful number, since it uses less digits than its factorization.

694640334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 440471.

The product of its (nonzero) digits is 186624, while the sum is 39.

The square root of 694640334 is about 26356.0303156602. The cubic root of 694640334 is about 885.6320653101.

The spelling of 694640334 in words is "six hundred ninety-four million, six hundred forty thousand, three hundred thirty-four".