690496 has 14 divisors (see below), whose sum is σ = 1370330. Its totient is φ = 345216.

The previous prime is 690493. The next prime is 690509. The reversal of 690496 is 694096.

It can be written as a sum of positive squares in only one way, i.e., 577600 + 112896 = 760^2 + 336^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (690491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5331 + ... + 5458.

2⁶⁹⁰⁴⁹⁶ is an apocalyptic number.

It is an amenable number.

690496 is a deficient number, since it is larger than the sum of its proper divisors (679834).

690496 is a wasteful number, since it uses less digits than its factorization.

690496 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10801 (or 10791 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 34.

The square root of 690496 is about 830.9608895730. The cubic root of 690496 is about 88.3867277359.

Subtracting 690496 from its reverse (694096), we obtain a square (3600 = 60²).

The spelling of 690496 in words is "six hundred ninety thousand, four hundred ninety-six".