699983605 has 4 divisors (see below), whose sum is σ = 839980332. Its totient is φ = 559986880.

The previous prime is 699983593. The next prime is 699983623. The reversal of 699983605 is 506389996.

699983605 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 76632516 + 623351089 = 8754^2 + 24967^2 .

It is not a de Polignac number, because 699983605 - 2⁹ = 699983093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69998356 + ... + 69998365.

It is an arithmetic number, because the mean of its divisors is an integer number (209995083).

Almost surely, 2^699983605 is an apocalyptic number.

It is an amenable number.

699983605 is a deficient number, since it is larger than the sum of its proper divisors (139996727).

699983605 is a wasteful number, since it uses less digits than its factorization.

699983605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139996726.

The product of its (nonzero) digits is 3149280, while the sum is 55.

The square root of 699983605 is about 26457.2032724549. The cubic root of 699983605 is about 887.8970696951.

The spelling of 699983605 in words is "six hundred ninety-nine million, nine hundred eighty-three thousand, six hundred five".