787873205 has 12 divisors (see below), whose sum is σ = 1099807020. Its totient is φ = 540255744.

The previous prime is 787873183. The next prime is 787873213. The reversal of 787873205 is 502378787.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 565773796 + 222099409 = 23786^2 + 14903^2 .

It is not a de Polignac number, because 787873205 - 2¹⁴ = 787856821 is a prime.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 787873205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1607660 + ... + 1608149.

It is an arithmetic number, because the mean of its divisors is an integer number (91650585).

Almost surely, 2^787873205 is an apocalyptic number.

It is an amenable number.

787873205 is a deficient number, since it is larger than the sum of its proper divisors (311933815).

787873205 is a wasteful number, since it uses less digits than its factorization.

787873205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3215828 (or 3215821 counting only the distinct ones).

The product of its (nonzero) digits is 658560, while the sum is 47.

The square root of 787873205 is about 28069.0791619533. The cubic root of 787873205 is about 923.6032310890.

The spelling of 787873205 in words is "seven hundred eighty-seven million, eight hundred seventy-three thousand, two hundred five".