690030 has 96 divisors (see below), whose sum is σ = 2122848. Its totient is φ = 153600.

The previous prime is 689987. The next prime is 690037. The reversal of 690030 is 30096.

It is a super-2 number, since 2×690030² = 952282801800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 689985 and 690012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (690037) by changing a digit.

690030 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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 47 ways as a sum of consecutive naturals, for example, 16810 + ... + 16850.

It is an arithmetic number, because the mean of its divisors is an integer number (22113).

2⁶⁹⁰⁰³⁰ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 690030, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1061424).

690030 is an abundant number, since it is smaller than the sum of its proper divisors (1432818).

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

690030 is a wasteful number, since it uses less digits than its factorization.

690030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82 (or 79 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 18.

The square root of 690030 is about 830.6804439735. The cubic root of 690030 is about 88.3668398658.

The spelling of 690030 in words is "six hundred ninety thousand, thirty".