780084897 has 16 divisors (see below), whose sum is σ = 1079668992. Its totient is φ = 500641920.

The previous prime is 780084883. The next prime is 780084917. The reversal of 780084897 is 798480087.

It is not a de Polignac number, because 780084897 - 2¹⁹ = 779560609 is a prime.

It is not an unprimeable number, because it can be changed into a prime (780084847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36748 + ... + 53949.

It is an arithmetic number, because the mean of its divisors is an integer number (67479312).

Almost surely, 2^780084897 is an apocalyptic number.

It is an amenable number.

780084897 is a deficient number, since it is larger than the sum of its proper divisors (299584095).

780084897 is a wasteful number, since it uses less digits than its factorization.

780084897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90808.

The product of its (nonzero) digits is 903168, while the sum is 51.

The square root of 780084897 is about 27929.9999462943. Note that the first 4 decimals coincide. The cubic root of 780084897 is about 920.5498040834.

The spelling of 780084897 in words is "seven hundred eighty million, eighty-four thousand, eight hundred ninety-seven".