1210885 has 12 divisors (see below), whose sum is σ = 1574532. Its totient is φ = 893568.

The previous prime is 1210883. The next prime is 1210897. The reversal of 1210885 is 5880121.

It can be written as a sum of positive squares in 6 ways, for example, as 93636 + 1117249 = 306^2 + 1057^2 .

It is not a de Polignac number, because 1210885 - 2¹ = 1210883 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1210883) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 129 + ... + 1561.

It is an arithmetic number, because the mean of its divisors is an integer number (131211).

2^1210885 is an apocalyptic number.

It is an amenable number.

1210885 is a deficient number, since it is larger than the sum of its proper divisors (363647).

1210885 is a wasteful number, since it uses less digits than its factorization.

1210885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1464 (or 1451 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 25.

The square root of 1210885 is about 1100.4021991981. The cubic root of 1210885 is about 106.5861969040.

The spelling of 1210885 in words is "one million, two hundred ten thousand, eight hundred eighty-five".