690448 has 20 divisors (see below), whose sum is σ = 1459728. Its totient is φ = 313760.

The previous prime is 690439. The next prime is 690449. The reversal of 690448 is 844096.

690448 is nontrivially palindromic in base 15.

It is not an unprimeable number, because it can be changed into a prime (690449) 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, 1786 + ... + 2137.

2⁶⁹⁰⁴⁴⁸ is an apocalyptic number.

It is an amenable number.

690448 is an abundant number, since it is smaller than the sum of its proper divisors (769280).

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

690448 is a wasteful number, since it uses less digits than its factorization.

690448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3942 (or 3936 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 690448 is about 830.9320068453. The cubic root of 690448 is about 88.3846796133.

The spelling of 690448 in words is "six hundred ninety thousand, four hundred forty-eight".