608290021 has 2 divisors, whose sum is σ = 608290022. Its totient is φ = 608290020.

The previous prime is 608290013. The next prime is 608290031. The reversal of 608290021 is 120092806.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 590976100 + 17313921 = 24310^2 + 4161^2 .

It is a cyclic number.

It is not a de Polignac number, because 608290021 - 2³ = 608290013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (608290031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 304145010 + 304145011.

It is an arithmetic number, because the mean of its divisors is an integer number (304145011).

Almost surely, 2^608290021 is an apocalyptic number.

It is an amenable number.

608290021 is a deficient number, since it is larger than the sum of its proper divisors (1).

608290021 is an equidigital number, since it uses as much as digits as its factorization.

608290021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 608290021 is about 24663.5362630747. The cubic root of 608290021 is about 847.2993969510.

The spelling of 608290021 in words is "six hundred eight million, two hundred ninety thousand, twenty-one".