1427566987 has 16 divisors (see below), whose sum is σ = 1823238144. Its totient is φ = 1085256000.

The previous prime is 1427566981. The next prime is 1427567017. The reversal of 1427566987 is 7896657241.

It is a cyclic number.

It is not a de Polignac number, because 1427566987 - 2²⁷ = 1293349259 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1427566981) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 222939 + ... + 229252.

It is an arithmetic number, because the mean of its divisors is an integer number (113952384).

Almost surely, 2^1427566987 is an apocalyptic number.

1427566987 is a deficient number, since it is larger than the sum of its proper divisors (395671157).

1427566987 is a wasteful number, since it uses less digits than its factorization.

1427566987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 452250.

The product of its digits is 5080320, while the sum is 55.

The square root of 1427566987 is about 37783.1574514360. The cubic root of 1427566987 is about 1125.9838601777.

The spelling of 1427566987 in words is "one billion, four hundred twenty-seven million, five hundred sixty-six thousand, nine hundred eighty-seven".