699998 has 24 divisors (see below), whose sum is σ = 1207800. Its totient is φ = 303264.

The previous prime is 699967. The next prime is 700001. The reversal of 699998 is 899996.

It is a congruent number.

It is an unprimeable number.

699998 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6368 + ... + 6476.

It is an arithmetic number, because the mean of its divisors is an integer number (50325).

2⁶⁹⁹⁹⁹⁸ is an apocalyptic number.

699998 is a deficient number, since it is larger than the sum of its proper divisors (507802).

699998 is a wasteful number, since it uses less digits than its factorization.

699998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156 (or 143 counting only the distinct ones).

The product of its digits is 314928, while the sum is 50.

The square root of 699998 is about 836.6588313046. The cubic root of 699998 is about 88.7903156119.

It can be divided in two parts, 69999 and 8, that added together give a palindrome (70007).

The spelling of 699998 in words is "six hundred ninety-nine thousand, nine hundred ninety-eight".