690013 has 8 divisors (see below), whose sum is σ = 751032. Its totient is φ = 631296.

The previous prime is 689987. The next prime is 690037. The reversal of 690013 is 310096.

It can be written as a sum of positive squares in 4 ways, for example, as 257049 + 432964 = 507^2 + 658^2 .

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 690013 - 2⁵ = 689981 is a prime.

It is a super-2 number, since 2×690013² = 952235880338, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (690073) 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, 81 + ... + 1177.

It is an arithmetic number, because the mean of its divisors is an integer number (93879).

2⁶⁹⁰⁰¹³ is an apocalyptic number.

It is an amenable number.

690013 is a deficient number, since it is larger than the sum of its proper divisors (61019).

690013 is a wasteful number, since it uses less digits than its factorization.

690013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1151.

The product of its (nonzero) digits is 162, while the sum is 19.

The square root of 690013 is about 830.6702113354. The cubic root of 690013 is about 88.3661141733.

The spelling of 690013 in words is "six hundred ninety thousand, thirteen".