3620387987 has 2 divisors, whose sum is σ = 3620387988. Its totient is φ = 3620387986.

The previous prime is 3620387977. The next prime is 3620388019. The reversal of 3620387987 is 7897830263.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3620387987 - 2²⁴ = 3603610771 is a prime.

It is not a weakly prime, because it can be changed into another prime (3620387977) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1810193993 + 1810193994.

It is an arithmetic number, because the mean of its divisors is an integer number (1810193994).

Almost surely, 2^3620387987 is an apocalyptic number.

3620387987 is a deficient number, since it is larger than the sum of its proper divisors (1).

3620387987 is an equidigital number, since it uses as much as digits as its factorization.

3620387987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3048192, while the sum is 53.

The square root of 3620387987 is about 60169.6600206450. The cubic root of 3620387987 is about 1535.5066621024.

The spelling of 3620387987 in words is "three billion, six hundred twenty million, three hundred eighty-seven thousand, nine hundred eighty-seven".