7212785 has 8 divisors (see below), whose sum is σ = 8678016. Its totient is φ = 5755120.

The previous prime is 7212773. The next prime is 7212791. The reversal of 7212785 is 5872127.

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

It is not a de Polignac number, because 7212785 - 2⁴ = 7212769 is a prime.

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

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 482 + ... + 3828.

It is an arithmetic number, because the mean of its divisors is an integer number (1084752).

Almost surely, 2^7212785 is an apocalyptic number.

It is an amenable number.

7212785 is a deficient number, since it is larger than the sum of its proper divisors (1465231).

7212785 is a wasteful number, since it uses less digits than its factorization.

7212785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3783.

The product of its digits is 7840, while the sum is 32.

The square root of 7212785 is about 2685.6628604499. The cubic root of 7212785 is about 193.2121036130.

It can be divided in two parts, 7212 and 785, that added together give a palindrome (7997).

The spelling of 7212785 in words is "seven million, two hundred twelve thousand, seven hundred eighty-five".