3640618 has 8 divisors (see below), whose sum is σ = 5782212. Its totient is φ = 1713216.

The previous prime is 3640597. The next prime is 3640633. The reversal of 3640618 is 8160463.

It can be written as a sum of positive squares in 2 ways, for example, as 3636649 + 3969 = 1907^2 + 63^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53505 + ... + 53572.

Almost surely, 2^3640618 is an apocalyptic number.

3640618 is a deficient number, since it is larger than the sum of its proper divisors (2141594).

3640618 is a wasteful number, since it uses less digits than its factorization.

3640618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107096.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 3640618 is about 1908.0403559673. The cubic root of 3640618 is about 153.8361387455.

The spelling of 3640618 in words is "three million, six hundred forty thousand, six hundred eighteen".