690670 has 8 divisors (see below), whose sum is σ = 1243224. Its totient is φ = 276264.

The previous prime is 690661. The next prime is 690673. The reversal of 690670 is 76096.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (690673) 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, 34524 + ... + 34543.

It is an arithmetic number, because the mean of its divisors is an integer number (155403).

2⁶⁹⁰⁶⁷⁰ is an apocalyptic number.

690670 is a deficient number, since it is larger than the sum of its proper divisors (552554).

690670 is a wasteful number, since it uses less digits than its factorization.

690670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69074.

The product of its (nonzero) digits is 2268, while the sum is 28.

The square root of 690670 is about 831.0655810464. The cubic root of 690670 is about 88.3941513845.

The spelling of 690670 in words is "six hundred ninety thousand, six hundred seventy".