788632021 has 2 divisors, whose sum is σ = 788632022. Its totient is φ = 788632020.

The previous prime is 788632001. The next prime is 788632043. The reversal of 788632021 is 120236887.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 768065796 + 20566225 = 27714^2 + 4535^2 .

It is a cyclic number.

It is not a de Polignac number, because 788632021 - 2⁹ = 788631509 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (788632001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 394316010 + 394316011.

It is an arithmetic number, because the mean of its divisors is an integer number (394316011).

Almost surely, 2^788632021 is an apocalyptic number.

It is an amenable number.

788632021 is a deficient number, since it is larger than the sum of its proper divisors (1).

788632021 is an equidigital number, since it uses as much as digits as its factorization.

788632021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32256, while the sum is 37.

The square root of 788632021 is about 28082.5928468153. The cubic root of 788632021 is about 923.8996493562.

The spelling of 788632021 in words is "seven hundred eighty-eight million, six hundred thirty-two thousand, twenty-one".