3640086 has 16 divisors (see below), whose sum is σ = 8089200. Its totient is φ = 1213344.

The previous prime is 3640081. The next prime is 3640121. The reversal of 3640086 is 6800463.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3640081) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33651 + ... + 33758.

It is an arithmetic number, because the mean of its divisors is an integer number (505575).

Almost surely, 2^3640086 is an apocalyptic number.

3640086 is an abundant number, since it is smaller than the sum of its proper divisors (4449114).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3640086 is a wasteful number, since it uses less digits than its factorization.

3640086 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67420 (or 67414 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 3640086 is about 1907.9009408248. The cubic root of 3640086 is about 153.8286450716.

The spelling of 3640086 in words is "three million, six hundred forty thousand, eighty-six".