690494 has 32 divisors (see below), whose sum is σ = 1284096. Its totient is φ = 272160.

The previous prime is 690493. The next prime is 690509. The reversal of 690494 is 494096.

It is a happy number.

690494 is nontrivially palindromic in base 6.

690494 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a zygodrome in base 6.

It is a self number, because there is not a number n which added to its sum of digits gives 690494.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 690494.

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 in 15 ways as a sum of consecutive naturals, for example, 16037 + ... + 16079.

It is an arithmetic number, because the mean of its divisors is an integer number (40128).

2⁶⁹⁰⁴⁹⁴ is an apocalyptic number.

690494 is a deficient number, since it is larger than the sum of its proper divisors (593602).

690494 is a wasteful number, since it uses less digits than its factorization.

690494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120.

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 690494 is about 830.9596861461. The cubic root of 690494 is about 88.3866423993.

The spelling of 690494 in words is "six hundred ninety thousand, four hundred ninety-four".