1225698 has 16 divisors (see below), whose sum is σ = 2488800. Its totient is φ = 402336.

The previous prime is 1225691. The next prime is 1225703. The reversal of 1225698 is 8965221.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (1225691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1123 + ... + 1926.

It is an arithmetic number, because the mean of its divisors is an integer number (155550).

2^1225698 is an apocalyptic number.

1225698 is an abundant number, since it is smaller than the sum of its proper divisors (1263102).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1225698 is a wasteful number, since it uses less digits than its factorization.

1225698 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3121.

The product of its digits is 8640, while the sum is 33.

The square root of 1225698 is about 1107.1124604122. The cubic root of 1225698 is about 107.0190666811.

The spelling of 1225698 in words is "one million, two hundred twenty-five thousand, six hundred ninety-eight".