3640774 has 4 divisors (see below), whose sum is σ = 5461164. Its totient is φ = 1820386.

The previous prime is 3640753. The next prime is 3640781. The reversal of 3640774 is 4770463.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 910192 + ... + 910195.

It is an arithmetic number, because the mean of its divisors is an integer number (1365291).

Almost surely, 2^3640774 is an apocalyptic number.

3640774 is a deficient number, since it is larger than the sum of its proper divisors (1820390).

3640774 is a wasteful number, since it uses less digits than its factorization.

3640774 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1820389.

The product of its (nonzero) digits is 14112, while the sum is 31.

The square root of 3640774 is about 1908.0812351679. The cubic root of 3640774 is about 153.8383360002.

It can be divided in two parts, 36407 and 74, that added together give a square (36481 = 191²).

The spelling of 3640774 in words is "three million, six hundred forty thousand, seven hundred seventy-four".