7850985 has 16 divisors (see below), whose sum is σ = 12603840. Its totient is φ = 4173120.

The previous prime is 7850963. The next prime is 7850987. The reversal of 7850985 is 5890587.

It is not a de Polignac number, because 7850985 - 2⁸ = 7850729 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (7850987) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4995 + ... + 6375.

It is an arithmetic number, because the mean of its divisors is an integer number (787740).

Almost surely, 2^7850985 is an apocalyptic number.

It is an amenable number.

7850985 is a deficient number, since it is larger than the sum of its proper divisors (4752855).

7850985 is a wasteful number, since it uses less digits than its factorization.

7850985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1768.

The product of its (nonzero) digits is 100800, while the sum is 42.

The square root of 7850985 is about 2801.9609204984. The cubic root of 7850985 is about 198.7504173086.

The spelling of 7850985 in words is "seven million, eight hundred fifty thousand, nine hundred eighty-five".