694639650 has 24 divisors (see below), whose sum is σ = 1722706704. Its totient is φ = 185237200.

The previous prime is 694639643. The next prime is 694639651. The reversal of 694639650 is 56936496.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 694639650.

It is not an unprimeable number, because it can be changed into a prime (694639651) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2315316 + ... + 2315615.

It is an arithmetic number, because the mean of its divisors is an integer number (71779446).

Almost surely, 2^694639650 is an apocalyptic number.

694639650 is an abundant number, since it is smaller than the sum of its proper divisors (1028067054).

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

694639650 is a wasteful number, since it uses less digits than its factorization.

694639650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4630946 (or 4630941 counting only the distinct ones).

The product of its (nonzero) digits is 1049760, while the sum is 48.

The square root of 694639650 is about 26356.0173394995. The cubic root of 694639650 is about 885.6317746213.

The spelling of 694639650 in words is "six hundred ninety-four million, six hundred thirty-nine thousand, six hundred fifty".