863874505 has 16 divisors (see below), whose sum is σ = 1117181520. Its totient is φ = 637486848.

The previous prime is 863874443. The next prime is 863874511. The reversal of 863874505 is 505478368.

It can be written as a sum of positive squares in 8 ways, for example, as 219961 + 863654544 = 469^2 + 29388^2 .

It is a cyclic number.

It is not a de Polignac number, because 863874505 - 2¹³ = 863866313 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 108811 + ... + 116479.

It is an arithmetic number, because the mean of its divisors is an integer number (69823845).

Almost surely, 2^863874505 is an apocalyptic number.

It is an amenable number.

863874505 is a deficient number, since it is larger than the sum of its proper divisors (253307015).

863874505 is a wasteful number, since it uses less digits than its factorization.

863874505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9420.

The product of its (nonzero) digits is 806400, while the sum is 46.

The square root of 863874505 is about 29391.7421225759. The cubic root of 863874505 is about 952.3945153150.

The spelling of 863874505 in words is "eight hundred sixty-three million, eight hundred seventy-four thousand, five hundred five".