690446 has 8 divisors (see below), whose sum is σ = 1046640. Its totient is φ = 341568.

The previous prime is 690439. The next prime is 690449. The reversal of 690446 is 644096.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (690449) by changing a digit.

690446 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1586 + ... + 1973.

It is an arithmetic number, because the mean of its divisors is an integer number (130830).

2⁶⁹⁰⁴⁴⁶ is an apocalyptic number.

690446 is a deficient number, since it is larger than the sum of its proper divisors (356194).

690446 is a wasteful number, since it uses less digits than its factorization.

690446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3658.

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 690446 is about 830.9308033766. The cubic root of 690446 is about 88.3845942728.

The spelling of 690446 in words is "six hundred ninety thousand, four hundred forty-six".