805672985 has 8 divisors (see below), whose sum is σ = 1041177480. Its totient is φ = 594958464.

The previous prime is 805672969. The next prime is 805672999. The reversal of 805672985 is 589276508.

It can be written as a sum of positive squares in 4 ways, for example, as 23687689 + 781985296 = 4867^2 + 27964^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 805672985 - 2⁴ = 805672969 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6197420 + ... + 6197549.

It is an arithmetic number, because the mean of its divisors is an integer number (130147185).

Almost surely, 2^805672985 is an apocalyptic number.

It is an amenable number.

805672985 is a deficient number, since it is larger than the sum of its proper divisors (235504495).

805672985 is a wasteful number, since it uses less digits than its factorization.

805672985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12394987.

The product of its (nonzero) digits is 1209600, while the sum is 50.

The square root of 805672985 is about 28384.3792428159. The cubic root of 805672985 is about 930.5069056038.

The spelling of 805672985 in words is "eight hundred five million, six hundred seventy-two thousand, nine hundred eighty-five".