698642 has 12 divisors (see below), whose sum is σ = 1219230. Its totient is φ = 299376.

The previous prime is 698641. The next prime is 698653. The reversal of 698642 is 246896.

It can be written as a sum of positive squares in only one way, i.e., 561001 + 137641 = 749^2 + 371^2 .

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 698642.

It is not an unprimeable number, because it can be changed into a prime (698641) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3467 + ... + 3662.

2⁶⁹⁸⁶⁴² is an apocalyptic number.

698642 is a deficient number, since it is larger than the sum of its proper divisors (520588).

698642 is a wasteful number, since it uses less digits than its factorization.

698642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7145 (or 7138 counting only the distinct ones).

The product of its digits is 20736, while the sum is 35.

The square root of 698642 is about 835.8480723194. The cubic root of 698642 is about 88.7329452119.

The spelling of 698642 in words is "six hundred ninety-eight thousand, six hundred forty-two".