3780987 has 36 divisors (see below), whose sum is σ = 6299640. Its totient is φ = 2010624.

The previous prime is 3780971. The next prime is 3780989. The reversal of 3780987 is 7890873.

It is not a de Polignac number, because 3780987 - 2⁴ = 3780971 is a prime.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (3780989) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 42439 + ... + 42527.

It is an arithmetic number, because the mean of its divisors is an integer number (174990).

Almost surely, 2^3780987 is an apocalyptic number.

3780987 is a deficient number, since it is larger than the sum of its proper divisors (2518653).

3780987 is a wasteful number, since it uses less digits than its factorization.

3780987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140 (or 116 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 42.

The square root of 3780987 is about 1944.4760219658. The cubic root of 3780987 is about 155.7883800547.

The spelling of 3780987 in words is "three million, seven hundred eighty thousand, nine hundred eighty-seven".