694990 has 8 divisors (see below), whose sum is σ = 1251000. Its totient is φ = 277992.

The previous prime is 694987. The next prime is 694997. The reversal of 694990 is 99496.

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

It is a super-2 number, since 2×694990² = 966022200200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (694997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34740 + ... + 34759.

It is an arithmetic number, because the mean of its divisors is an integer number (156375).

2⁶⁹⁴⁹⁹⁰ is an apocalyptic number.

694990 is a deficient number, since it is larger than the sum of its proper divisors (556010).

694990 is a wasteful number, since it uses less digits than its factorization.

694990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69506.

The product of its (nonzero) digits is 17496, while the sum is 37.

The square root of 694990 is about 833.6606024036. The cubic root of 694990 is about 88.5780642667.

The spelling of 694990 in words is "six hundred ninety-four thousand, nine hundred ninety".