694309 has 16 divisors (see below), whose sum is σ = 884736. Its totient is φ = 529200.

The previous prime is 694277. The next prime is 694313. The reversal of 694309 is 903496.

It is not a de Polignac number, because 694309 - 2⁵ = 694277 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (694319) 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, 5404 + ... + 5530.

It is an arithmetic number, because the mean of its divisors is an integer number (55296).

2⁶⁹⁴³⁰⁹ is an apocalyptic number.

It is an amenable number.

694309 is a deficient number, since it is larger than the sum of its proper divisors (190427).

694309 is a wasteful number, since it uses less digits than its factorization.

694309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216.

The product of its (nonzero) digits is 5832, while the sum is 31.

The square root of 694309 is about 833.2520627037. The cubic root of 694309 is about 88.5491231429.

The spelling of 694309 in words is "six hundred ninety-four thousand, three hundred nine".