3640486 has 16 divisors (see below), whose sum is σ = 5896800. Its totient is φ = 1680448.

The previous prime is 3640471. The next prime is 3640487. The reversal of 3640486 is 6840463.

It is a super-3 number, since 3×3640486³ (a number of 21 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3640487) 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, 31 + ... + 2698.

It is an arithmetic number, because the mean of its divisors is an integer number (368550).

Almost surely, 2^3640486 is an apocalyptic number.

3640486 is a deficient number, since it is larger than the sum of its proper divisors (2256314).

3640486 is a wasteful number, since it uses less digits than its factorization.

3640486 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2783.

The product of its (nonzero) digits is 13824, while the sum is 31.

The square root of 3640486 is about 1908.0057651905. The cubic root of 3640486 is about 153.8342794810.

The spelling of 3640486 in words is "three million, six hundred forty thousand, four hundred eighty-six".