1226815 has 8 divisors (see below), whose sum is σ = 1484208. Its totient is φ = 973440.

The previous prime is 1226807. The next prime is 1226821. The reversal of 1226815 is 5186221.

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

It is not a de Polignac number, because 1226815 - 2³ = 1226807 is a prime.

It is a Duffinian number.

1226815 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 1226815.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 282 + ... + 1591.

It is an arithmetic number, because the mean of its divisors is an integer number (185526).

2^1226815 is an apocalyptic number.

1226815 is a deficient number, since it is larger than the sum of its proper divisors (257393).

1226815 is a wasteful number, since it uses less digits than its factorization.

1226815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2009.

The product of its digits is 960, while the sum is 25.

The square root of 1226815 is about 1107.6168109956. The cubic root of 1226815 is about 107.0515662590.

The spelling of 1226815 in words is "one million, two hundred twenty-six thousand, eight hundred fifteen".