3640894 has 8 divisors (see below), whose sum is σ = 5748840. Its totient is φ = 1724616.

The previous prime is 3640891. The next prime is 3640909. The reversal of 3640894 is 4980463.

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

It is a super-2 number, since 2×3640894² = 26512218238472, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3640891) 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, 47869 + ... + 47944.

It is an arithmetic number, because the mean of its divisors is an integer number (718605).

Almost surely, 2^3640894 is an apocalyptic number.

3640894 is a deficient number, since it is larger than the sum of its proper divisors (2107946).

3640894 is a wasteful number, since it uses less digits than its factorization.

3640894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95834.

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 3640894 is about 1908.1126801109. The cubic root of 3640894 is about 153.8400261534.

The spelling of 3640894 in words is "three million, six hundred forty thousand, eight hundred ninety-four".