694649866 has 8 divisors (see below), whose sum is σ = 1042647840. Its totient is φ = 347100588.

The previous prime is 694649863. The next prime is 694649867. The reversal of 694649866 is 668946496.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 694649866.

It is not an unprimeable number, because it can be changed into a prime (694649863) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 108276 + ... + 114511.

It is an arithmetic number, because the mean of its divisors is an integer number (130330980).

Almost surely, 2^694649866 is an apocalyptic number.

694649866 is a deficient number, since it is larger than the sum of its proper divisors (347997974).

694649866 is a wasteful number, since it uses less digits than its factorization.

694649866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224348.

The product of its digits is 13436928, while the sum is 58.

The square root of 694649866 is about 26356.2111465210. The cubic root of 694649866 is about 885.6361162344.

The spelling of 694649866 in words is "six hundred ninety-four million, six hundred forty-nine thousand, eight hundred sixty-six".