699138 has 48 divisors (see below), whose sum is σ = 1723680. Its totient is φ = 209880.

The previous prime is 699133. The next prime is 699151. The reversal of 699138 is 831996.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 699138.

It is not an unprimeable number, because it can be changed into a prime (699133) by changing a digit.

699138 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 23 ways as a sum of consecutive naturals, for example, 6481 + ... + 6587.

It is an arithmetic number, because the mean of its divisors is an integer number (35910).

2⁶⁹⁹¹³⁸ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 699138, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (861840).

699138 is an abundant number, since it is smaller than the sum of its proper divisors (1024542).

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

699138 is a wasteful number, since it uses less digits than its factorization.

699138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140 (or 123 counting only the distinct ones).

The product of its digits is 11664, while the sum is 36.

The square root of 699138 is about 836.1447243151. The cubic root of 699138 is about 88.7539388584.

The spelling of 699138 in words is "six hundred ninety-nine thousand, one hundred thirty-eight".