1226785670 has 16 divisors (see below), whose sum is σ = 2408961168. Its totient is φ = 446103840.

The previous prime is 1226785667. The next prime is 1226785687. The reversal of 1226785670 is 765876221.

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, 5576189 + ... + 5576408.

It is an arithmetic number, because the mean of its divisors is an integer number (150560073).

Almost surely, 2^1226785670 is an apocalyptic number.

1226785670 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1226785670 is a deficient number, since it is larger than the sum of its proper divisors (1182175498).

1226785670 is a wasteful number, since it uses less digits than its factorization.

1226785670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11152615.

The product of its (nonzero) digits is 282240, while the sum is 44.

The square root of 1226785670 is about 35025.5002819374. The cubic root of 1226785670 is about 1070.5071314276.

The spelling of 1226785670 in words is "one billion, two hundred twenty-six million, seven hundred eighty-five thousand, six hundred seventy".