694140556 has 24 divisors (see below), whose sum is σ = 1242017280. Its totient is φ = 339295632.

The previous prime is 694140539. The next prime is 694140589. The reversal of 694140556 is 655041496.

It is a happy number.

It is a super-2 number, since 2×694140556² = 963662222967978272, which contains 22 as substring.

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, 228415 + ... + 231433.

It is an arithmetic number, because the mean of its divisors is an integer number (51750720).

Almost surely, 2^694140556 is an apocalyptic number.

It is an amenable number.

694140556 is a deficient number, since it is larger than the sum of its proper divisors (547876724).

694140556 is a wasteful number, since it uses less digits than its factorization.

694140556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4293 (or 4291 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 40.

The square root of 694140556 is about 26346.5473259780. The cubic root of 694140556 is about 885.4196169419.

The spelling of 694140556 in words is "six hundred ninety-four million, one hundred forty thousand, five hundred fifty-six".