690137 has 8 divisors (see below), whose sum is σ = 830400. Its totient is φ = 560304.

The previous prime is 690127. The next prime is 690139. The reversal of 690137 is 731096.

690137 = T₄₈ + T₄₉ + ... + T₁₆₁.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 690137 - 2⁶ = 690073 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 15.

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

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2462 + ... + 2727.

It is an arithmetic number, because the mean of its divisors is an integer number (103800).

2⁶⁹⁰¹³⁷ is an apocalyptic number.

It is an amenable number.

690137 is a deficient number, since it is larger than the sum of its proper divisors (140263).

690137 is a wasteful number, since it uses less digits than its factorization.

690137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5215.

The product of its (nonzero) digits is 1134, while the sum is 26.

The square root of 690137 is about 830.7448465082. The cubic root of 690137 is about 88.3714071856.

The spelling of 690137 in words is "six hundred ninety thousand, one hundred thirty-seven".