690620 has 24 divisors (see below), whose sum is σ = 1657824. Its totient is φ = 236736.

The previous prime is 690611. The next prime is 690629. The reversal of 690620 is 26096.

690620 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (690611) and next prime (690629).

It is a nialpdrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (690629) by changing a digit.

690620 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 7 ways as a sum of consecutive naturals, for example, 2327 + ... + 2606.

It is an arithmetic number, because the mean of its divisors is an integer number (69076).

2⁶⁹⁰⁶²⁰ is an apocalyptic number.

It is an amenable number.

690620 is an abundant number, since it is smaller than the sum of its proper divisors (967204).

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

690620 is a wasteful number, since it uses less digits than its factorization.

690620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4949 (or 4947 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 690620 is about 831.0354986401. The cubic root of 690620 is about 88.3920182798.

The spelling of 690620 in words is "six hundred ninety thousand, six hundred twenty".