632780089 has 2 divisors, whose sum is σ = 632780090. Its totient is φ = 632780088.

The previous prime is 632780081. The next prime is 632780107. The reversal of 632780089 is 980087236.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 498405625 + 134374464 = 22325^2 + 11592^2 .

It is a cyclic number.

It is not a de Polignac number, because 632780089 - 2³ = 632780081 is a prime.

It is not a weakly prime, because it can be changed into another prime (632780081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 316390044 + 316390045.

It is an arithmetic number, because the mean of its divisors is an integer number (316390045).

Almost surely, 2^632780089 is an apocalyptic number.

It is an amenable number.

632780089 is a deficient number, since it is larger than the sum of its proper divisors (1).

632780089 is an equidigital number, since it uses as much as digits as its factorization.

632780089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 145152, while the sum is 43.

The square root of 632780089 is about 25155.1205324085. The cubic root of 632780089 is about 858.5210243479.

The spelling of 632780089 in words is "six hundred thirty-two million, seven hundred eighty thousand, eighty-nine".