3870513 has 6 divisors (see below), whose sum is σ = 5590754. Its totient is φ = 2580336.

The previous prime is 3870499. The next prime is 3870527. The reversal of 3870513 is 3150783.

It is an interprime number because it is at equal distance from previous prime (3870499) and next prime (3870527).

It can be written as a sum of positive squares in only one way, i.e., 2214144 + 1656369 = 1488^2 + 1287^2 .

It is not a de Polignac number, because 3870513 - 2⁹ = 3870001 is a prime.

It is a Duffinian number.

3870513 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (3870563) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 215020 + ... + 215037.

Almost surely, 2^3870513 is an apocalyptic number.

It is an amenable number.

3870513 is a deficient number, since it is larger than the sum of its proper divisors (1720241).

3870513 is a wasteful number, since it uses less digits than its factorization.

3870513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 430063 (or 430060 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 3870513 is about 1967.3619392476. The cubic root of 3870513 is about 157.0083839357.

The spelling of 3870513 in words is "three million, eight hundred seventy thousand, five hundred thirteen".