690734 has 8 divisors (see below), whose sum is σ = 1130328. Its totient is φ = 313960.

The previous prime is 690721. The next prime is 690757. The reversal of 690734 is 437096.

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

It is a super-2 number, since 2×690734² = 954226917512, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 690697 and 690706.

It is a congruent number.

It is an unprimeable number.

690734 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15677 + ... + 15720.

It is an arithmetic number, because the mean of its divisors is an integer number (141291).

2⁶⁹⁰⁷³⁴ is an apocalyptic number.

690734 is a deficient number, since it is larger than the sum of its proper divisors (439594).

690734 is a wasteful number, since it uses less digits than its factorization.

690734 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31410.

The product of its (nonzero) digits is 4536, while the sum is 29.

The square root of 690734 is about 831.1040849376. The cubic root of 690734 is about 88.3968816082.

The spelling of 690734 in words is "six hundred ninety thousand, seven hundred thirty-four".