690434 has 8 divisors (see below), whose sum is σ = 1050060. Its totient is φ = 340416.

The previous prime is 690433. The next prime is 690439. The reversal of 690434 is 434096.

It can be written as a sum of positive squares in 2 ways, for example, as 635209 + 55225 = 797^2 + 235^2 .

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

It is not an unprimeable number, because it can be changed into a prime (690433) 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, 2219 + ... + 2510.

2⁶⁹⁰⁴³⁴ is an apocalyptic number.

690434 is a deficient number, since it is larger than the sum of its proper divisors (359626).

690434 is a wasteful number, since it uses less digits than its factorization.

690434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4804.

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 690434 is about 830.9235825273. The cubic root of 690434 is about 88.3840822264.

The spelling of 690434 in words is "six hundred ninety thousand, four hundred thirty-four".