785630089 has 2 divisors, whose sum is σ = 785630090. Its totient is φ = 785630088.

The previous prime is 785630057. The next prime is 785630137. The reversal of 785630089 is 980036587.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 580424464 + 205205625 = 24092^2 + 14325^2 .

It is a cyclic number.

It is not a de Polignac number, because 785630089 - 2⁵ = 785630057 is a prime.

It is not a weakly prime, because it can be changed into another prime (785630009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 392815044 + 392815045.

It is an arithmetic number, because the mean of its divisors is an integer number (392815045).

Almost surely, 2^785630089 is an apocalyptic number.

It is an amenable number.

785630089 is a deficient number, since it is larger than the sum of its proper divisors (1).

785630089 is an equidigital number, since it uses as much as digits as its factorization.

785630089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 362880, while the sum is 46.

The square root of 785630089 is about 28029.0936171686. The cubic root of 785630089 is about 922.7258824608.

The spelling of 785630089 in words is "seven hundred eighty-five million, six hundred thirty thousand, eighty-nine".