1213487 has 8 divisors (see below), whose sum is σ = 1337472. Its totient is φ = 1091800.

The previous prime is 1213483. The next prime is 1213517. The reversal of 1213487 is 7843121.

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 1213487 - 2² = 1213483 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 (1213481) 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, 662 + ... + 1692.

It is an arithmetic number, because the mean of its divisors is an integer number (167184).

2^1213487 is an apocalyptic number.

1213487 is a deficient number, since it is larger than the sum of its proper divisors (123985).

1213487 is a wasteful number, since it uses less digits than its factorization.

1213487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1149.

The product of its digits is 1344, while the sum is 26.

The square root of 1213487 is about 1101.5838597220. The cubic root of 1213487 is about 106.6624879005.

It can be divided in two parts, 12134 and 87, that added together give a palindrome (12221).

The spelling of 1213487 in words is "one million, two hundred thirteen thousand, four hundred eighty-seven".