1587344668 has 36 divisors (see below), whose sum is σ = 3437691600. Its totient is φ = 627958656.

The previous prime is 1587344663. The next prime is 1587344713. The reversal of 1587344668 is 8664437851.

It is a Harshad number since it is a multiple of its sum of digits (52).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1587344663) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 162993 + ... + 172456.

Almost surely, 2^1587344668 is an apocalyptic number.

It is an amenable number.

1587344668 is an abundant number, since it is smaller than the sum of its proper divisors (1850346932).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1587344668 is a wasteful number, since it uses less digits than its factorization.

1587344668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335486 (or 335471 counting only the distinct ones).

The product of its digits is 3870720, while the sum is 52.

The square root of 1587344668 is about 39841.4942992855. The cubic root of 1587344668 is about 1166.5152278354.

The spelling of 1587344668 in words is "one billion, five hundred eighty-seven million, three hundred forty-four thousand, six hundred sixty-eight".