690424 has 16 divisors (see below), whose sum is σ = 1479600. Its totient is φ = 295872.

The previous prime is 690419. The next prime is 690427. The reversal of 690424 is 424096.

It is a nialpdrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (690427) 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, 6109 + ... + 6220.

It is an arithmetic number, because the mean of its divisors is an integer number (92475).

2⁶⁹⁰⁴²⁴ is an apocalyptic number.

It is an amenable number.

690424 is an abundant number, since it is smaller than the sum of its proper divisors (789176).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

690424 is a wasteful number, since it uses less digits than its factorization.

690424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12342 (or 12338 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 690424 is about 830.9175651050. The cubic root of 690424 is about 88.3836555165.

The spelling of 690424 in words is "six hundred ninety thousand, four hundred twenty-four".