694934640 has 100 divisors (see below), whose sum is σ = 2413633464. Its totient is φ = 185314176.

The previous prime is 694934593. The next prime is 694934651. The reversal of 694934640 is 46439496.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 47142 + ... + 60101.

Almost surely, 2^694934640 is an apocalyptic number.

694934640 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

694934640 is an abundant number, since it is smaller than the sum of its proper divisors (1718698824).

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

694934640 is a wasteful number, since it uses less digits than its factorization.

694934640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107268 (or 107253 counting only the distinct ones).

The product of its (nonzero) digits is 559872, while the sum is 45.

The square root of 694934640 is about 26361.6130007251. The cubic root of 694934640 is about 885.7571228476.

The spelling of 694934640 in words is "six hundred ninety-four million, nine hundred thirty-four thousand, six hundred forty".