690704 has 30 divisors (see below), whose sum is σ = 1558494. Its totient is φ = 295680.

The previous prime is 690689. The next prime is 690719. The reversal of 690704 is 407096.

It is an interprime number because it is at equal distance from previous prime (690689) and next prime (690719).

It can be written as a sum of positive squares in only one way, i.e., 490000 + 200704 = 700^2 + 448^2 .

It is a hoax number, since the sum of its digits (26) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

690704 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 5 ways as a sum of consecutive naturals, for example, 344 + ... + 1224.

2⁶⁹⁰⁷⁰⁴ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 690704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (779247).

690704 is an abundant number, since it is smaller than the sum of its proper divisors (867790).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

690704 is a wasteful number, since it uses less digits than its factorization.

690704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 903 (or 890 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 26.

The square root of 690704 is about 831.0860364607. The cubic root of 690704 is about 88.3956018368.

The spelling of 690704 in words is "six hundred ninety thousand, seven hundred four".