690699 has 4 divisors (see below), whose sum is σ = 920936. Its totient is φ = 460464.

The previous prime is 690689. The next prime is 690719. The reversal of 690699 is 996096.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 690699 - 2⁹ = 690187 is a prime.

It is a D-number.

It is a Duffinian number.

690699 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (690629) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 115114 + ... + 115119.

It is an arithmetic number, because the mean of its divisors is an integer number (230234).

2⁶⁹⁰⁶⁹⁹ is an apocalyptic number.

690699 is a deficient number, since it is larger than the sum of its proper divisors (230237).

690699 is a wasteful number, since it uses less digits than its factorization.

690699 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230236.

The product of its (nonzero) digits is 26244, while the sum is 39.

The square root of 690699 is about 831.0830283431. The cubic root of 690699 is about 88.3953885380.

The spelling of 690699 in words is "six hundred ninety thousand, six hundred ninety-nine".