1227020887 has 4 divisors (see below), whose sum is σ = 1227140320. Its totient is φ = 1226901456.

The previous prime is 1227020857. The next prime is 1227020897. The reversal of 1227020887 is 7880207221.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1227020887 - 2⁷ = 1227020759 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 (1227020857) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42687 + ... + 65392.

It is an arithmetic number, because the mean of its divisors is an integer number (306785080).

Almost surely, 2^1227020887 is an apocalyptic number.

1227020887 is a deficient number, since it is larger than the sum of its proper divisors (119433).

1227020887 is a wasteful number, since it uses less digits than its factorization.

1227020887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119432.

The product of its (nonzero) digits is 25088, while the sum is 37.

The square root of 1227020887 is about 35028.8579174372. The cubic root of 1227020887 is about 1070.5755447321.

The spelling of 1227020887 in words is "one billion, two hundred twenty-seven million, twenty thousand, eight hundred eighty-seven".