785432287 has 2 divisors, whose sum is σ = 785432288. Its totient is φ = 785432286.

The previous prime is 785432261. The next prime is 785432293. The reversal of 785432287 is 782234587.

It is a strong prime.

It is an emirp because it is prime and its reverse (782234587) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-785432287 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (785432987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 392716143 + 392716144.

It is an arithmetic number, because the mean of its divisors is an integer number (392716144).

Almost surely, 2^785432287 is an apocalyptic number.

785432287 is a deficient number, since it is larger than the sum of its proper divisors (1).

785432287 is an equidigital number, since it uses as much as digits as its factorization.

785432287 is an evil number, because the sum of its binary digits is even.

The product of its digits is 752640, while the sum is 46.

The square root of 785432287 is about 28025.5648827994. The cubic root of 785432287 is about 922.6484361972.

The spelling of 785432287 in words is "seven hundred eighty-five million, four hundred thirty-two thousand, two hundred eighty-seven".