1225670 has 24 divisors (see below), whose sum is σ = 2334096. Its totient is φ = 462528.

The previous prime is 1225663. The next prime is 1225687. The reversal of 1225670 is 765221.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 16754 + ... + 16826.

It is an arithmetic number, because the mean of its divisors is an integer number (97254).

2^1225670 is an apocalyptic number.

1225670 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1225670 is a deficient number, since it is larger than the sum of its proper divisors (1108426).

1225670 is an equidigital number, since it uses as much as digits as its factorization.

1225670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176 (or 103 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 23.

The square root of 1225670 is about 1107.0998148315. The cubic root of 1225670 is about 107.0182517559.

The spelling of 1225670 in words is "one million, two hundred twenty-five thousand, six hundred seventy".