1227987 has 8 divisors (see below), whose sum is σ = 1819280. Its totient is φ = 818640.

The previous prime is 1227983. The next prime is 1228001. The reversal of 1227987 is 7897221.

It is not a de Polignac number, because 1227987 - 2² = 1227983 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1227983) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22714 + ... + 22767.

It is an arithmetic number, because the mean of its divisors is an integer number (227410).

2^1227987 is an apocalyptic number.

1227987 is a deficient number, since it is larger than the sum of its proper divisors (591293).

1227987 is an equidigital number, since it uses as much as digits as its factorization.

1227987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45490 (or 45484 counting only the distinct ones).

The product of its digits is 14112, while the sum is 36.

The square root of 1227987 is about 1108.1457485367. The cubic root of 1227987 is about 107.0856448837.

The spelling of 1227987 in words is "one million, two hundred twenty-seven thousand, nine hundred eighty-seven".