3505987 has 4 divisors (see below), whose sum is σ = 3510936. Its totient is φ = 3501040.

The previous prime is 3505981. The next prime is 3505991. The reversal of 3505987 is 7895053.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7895053 = 103 ⋅76651.

It is a cyclic number.

It is not a de Polignac number, because 3505987 - 2³ = 3505979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3505981) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1189 + ... + 2902.

It is an arithmetic number, because the mean of its divisors is an integer number (877734).

Almost surely, 2^3505987 is an apocalyptic number.

3505987 is a deficient number, since it is larger than the sum of its proper divisors (4949).

3505987 is an equidigital number, since it uses as much as digits as its factorization.

3505987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4948.

The product of its (nonzero) digits is 37800, while the sum is 37.

The square root of 3505987 is about 1872.4281027586. The cubic root of 3505987 is about 151.9159709839.

The spelling of 3505987 in words is "three million, five hundred five thousand, nine hundred eighty-seven".