785428867 has 4 divisors (see below), whose sum is σ = 785524000. Its totient is φ = 785333736.

The previous prime is 785428843. The next prime is 785428879. The reversal of 785428867 is 768824587.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-785428867 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (785423867) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33867 + ... + 52132.

It is an arithmetic number, because the mean of its divisors is an integer number (196381000).

Almost surely, 2^785428867 is an apocalyptic number.

785428867 is a deficient number, since it is larger than the sum of its proper divisors (95133).

785428867 is an equidigital number, since it uses as much as digits as its factorization.

785428867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95132.

The product of its digits is 6021120, while the sum is 55.

The square root of 785428867 is about 28025.5038670137. The cubic root of 785428867 is about 922.6470970356.

The spelling of 785428867 in words is "seven hundred eighty-five million, four hundred twenty-eight thousand, eight hundred sixty-seven".