7812985 has 8 divisors (see below), whose sum is σ = 9783360. Its totient is φ = 5978544.

The previous prime is 7812983. The next prime is 7813007. The reversal of 7812985 is 5892187.

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 7812985 - 2¹ = 7812983 is a prime.

It is a super-2 number, since 2×7812985² = 122085469220450, which contains 22 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (7812983) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33855 + ... + 34084.

It is an arithmetic number, because the mean of its divisors is an integer number (1222920).

Almost surely, 2^7812985 is an apocalyptic number.

It is an amenable number.

7812985 is a deficient number, since it is larger than the sum of its proper divisors (1970375).

7812985 is a wasteful number, since it uses less digits than its factorization.

7812985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67967.

The product of its digits is 40320, while the sum is 40.

The square root of 7812985 is about 2795.1717299658. The cubic root of 7812985 is about 198.4292374884.

The spelling of 7812985 in words is "seven million, eight hundred twelve thousand, nine hundred eighty-five".