690136 has 16 divisors (see below), whose sum is σ = 1302840. Its totient is φ = 342720.

The previous prime is 690127. The next prime is 690139. The reversal of 690136 is 631096.

690136 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a nialpdrome in base 15.

It is a self number, because there is not a number n which added to its sum of digits gives 690136.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (690139) by changing a digit.

690136 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 3 ways as a sum of consecutive naturals, for example, 2095 + ... + 2401.

2⁶⁹⁰¹³⁶ is an apocalyptic number.

It is an amenable number.

690136 is a deficient number, since it is larger than the sum of its proper divisors (612704).

690136 is a wasteful number, since it uses less digits than its factorization.

690136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 594 (or 590 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 25.

The square root of 690136 is about 830.7442446385. The cubic root of 690136 is about 88.3713645026.

The spelling of 690136 in words is "six hundred ninety thousand, one hundred thirty-six".