3870555 has 32 divisors (see below), whose sum is σ = 6967296. Its totient is φ = 1820544.

The previous prime is 3870551. The next prime is 3870557. The reversal of 3870555 is 5550783.

It is not a de Polignac number, because 3870555 - 2² = 3870551 is a prime.

3870555 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (3870551) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4054 + ... + 4916.

It is an arithmetic number, because the mean of its divisors is an integer number (217728).

Almost surely, 2^3870555 is an apocalyptic number.

3870555 is a deficient number, since it is larger than the sum of its proper divisors (3096741).

3870555 is a wasteful number, since it uses less digits than its factorization.

3870555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 907.

The product of its (nonzero) digits is 21000, while the sum is 33.

The square root of 3870555 is about 1967.3726134111. The cubic root of 3870555 is about 157.0089518473.

The spelling of 3870555 in words is "three million, eight hundred seventy thousand, five hundred fifty-five".