699894 has 32 divisors (see below), whose sum is σ = 1676640. Its totient is φ = 215136.

The previous prime is 699863. The next prime is 699931. The reversal of 699894 is 498996.

699894 = 226² + 227² + ... + 238².

It is a super-2 number, since 2×699894² = 979703222472, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

699894 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 204 + ... + 1200.

It is an arithmetic number, because the mean of its divisors is an integer number (52395).

2⁶⁹⁹⁸⁹⁴ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 699894, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (838320).

699894 is an abundant number, since it is smaller than the sum of its proper divisors (976746).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

699894 is a wasteful number, since it uses less digits than its factorization.

699894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1021 (or 1015 counting only the distinct ones).

The product of its digits is 139968, while the sum is 45.

The square root of 699894 is about 836.5966770195. The cubic root of 699894 is about 88.7859181469.

The spelling of 699894 in words is "six hundred ninety-nine thousand, eight hundred ninety-four".