699686698 has 4 divisors (see below), whose sum is σ = 1049530050. Its totient is φ = 349843348.

The previous prime is 699686641. The next prime is 699686707. The reversal of 699686698 is 896686996.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 577296729 + 122389969 = 24027^2 + 11063^2 .

It is a super-2 number, since 2×699686698² = 979122950716286408, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 174921673 + ... + 174921676.

Almost surely, 2^699686698 is an apocalyptic number.

699686698 is a deficient number, since it is larger than the sum of its proper divisors (349843352).

699686698 is a wasteful number, since it uses less digits than its factorization.

699686698 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 349843351.

The product of its digits is 60466176, while the sum is 67.

The square root of 699686698 is about 26451.5915967263. The cubic root of 699686698 is about 887.7715143082.

The spelling of 699686698 in words is "six hundred ninety-nine million, six hundred eighty-six thousand, six hundred ninety-eight".