690029 has 4 divisors (see below), whose sum is σ = 712320. Its totient is φ = 667740.

The previous prime is 689987. The next prime is 690037. The reversal of 690029 is 920096.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a de Polignac number, because none of the positive numbers 2^k-690029 is a prime.

It is a super-2 number, since 2×690029² = 952280041682, 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 (690059) 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 3 ways as a sum of consecutive naturals, for example, 11099 + ... + 11160.

It is an arithmetic number, because the mean of its divisors is an integer number (178080).

2⁶⁹⁰⁰²⁹ is an apocalyptic number.

It is an amenable number.

690029 is a deficient number, since it is larger than the sum of its proper divisors (22291).

690029 is a wasteful number, since it uses less digits than its factorization.

690029 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22290.

The product of its (nonzero) digits is 972, while the sum is 26.

The square root of 690029 is about 830.6798420571. The cubic root of 690029 is about 88.3667971783.

The spelling of 690029 in words is "six hundred ninety thousand, twenty-nine".