698666866 has 8 divisors (see below), whose sum is σ = 1050102000. Its totient is φ = 348632868.

The previous prime is 698666861. The next prime is 698666887. The reversal of 698666866 is 668666896.

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

It is not an unprimeable number, because it can be changed into a prime (698666861) 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, 349036 + ... + 351031.

It is an arithmetic number, because the mean of its divisors is an integer number (131262750).

Almost surely, 2^698666866 is an apocalyptic number.

698666866 is a deficient number, since it is larger than the sum of its proper divisors (351435134).

698666866 is a wasteful number, since it uses less digits than its factorization.

698666866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 700568.

The product of its digits is 26873856, while the sum is 61.

The square root of 698666866 is about 26432.3072394371. The cubic root of 698666866 is about 887.3399792428.

The spelling of 698666866 in words is "six hundred ninety-eight million, six hundred sixty-six thousand, eight hundred sixty-six".