3640495 has 8 divisors (see below), whose sum is σ = 4598640. Its totient is φ = 2759040.

The previous prime is 3640493. The next prime is 3640519. The reversal of 3640495 is 5940463.

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

It is not a de Polignac number, because 3640495 - 2¹ = 3640493 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3640493) 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, 19066 + ... + 19255.

It is an arithmetic number, because the mean of its divisors is an integer number (574830).

Almost surely, 2^3640495 is an apocalyptic number.

3640495 is a deficient number, since it is larger than the sum of its proper divisors (958145).

3640495 is a wasteful number, since it uses less digits than its factorization.

3640495 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38345.

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 3640495 is about 1908.0081236724. The cubic root of 3640495 is about 153.8344062504.

Subtracting from 3640495 its sum of digits (31), we obtain a square (3640464 = 1908²).

Subtracting 3640495 from its reverse (5940463), we obtain a cube (2299968 = 132³).

The spelling of 3640495 in words is "three million, six hundred forty thousand, four hundred ninety-five".