6021187987 has 2 divisors, whose sum is σ = 6021187988. Its totient is φ = 6021187986.

The previous prime is 6021187981. The next prime is 6021187999. The reversal of 6021187987 is 7897811206.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6021187987 - 2¹⁵ = 6021155219 is a prime.

It is a super-2 number, since 2×6021187987² = 72509409549586224338, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 6021187987.

It is not a weakly prime, because it can be changed into another prime (6021187981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3010593993 + 3010593994.

It is an arithmetic number, because the mean of its divisors is an integer number (3010593994).

Almost surely, 2^6021187987 is an apocalyptic number.

6021187987 is a deficient number, since it is larger than the sum of its proper divisors (1).

6021187987 is an equidigital number, since it uses as much as digits as its factorization.

6021187987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 338688, while the sum is 49.

The square root of 6021187987 is about 77596.3142616967. The cubic root of 6021187987 is about 1819.2570315057.

The spelling of 6021187987 in words is "six billion, twenty-one million, one hundred eighty-seven thousand, nine hundred eighty-seven".