3720117887 has 16 divisors (see below), whose sum is σ = 3806380032. Its totient is φ = 3634994880.

The previous prime is 3720117857. The next prime is 3720117913. The reversal of 3720117887 is 7887110273.

It is a cyclic number.

It is not a de Polignac number, because 3720117887 - 2⁶ = 3720117823 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3720117857) 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, 5116718 + ... + 5117444.

It is an arithmetic number, because the mean of its divisors is an integer number (237898752).

Almost surely, 2^3720117887 is an apocalyptic number.

3720117887 is a deficient number, since it is larger than the sum of its proper divisors (86262145).

3720117887 is a wasteful number, since it uses less digits than its factorization.

3720117887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1358.

The product of its (nonzero) digits is 131712, while the sum is 44.

The square root of 3720117887 is about 60992.7691370051. The cubic root of 3720117887 is about 1549.4785463395.

The spelling of 3720117887 in words is "three billion, seven hundred twenty million, one hundred seventeen thousand, eight hundred eighty-seven".