3640973 has 8 divisors (see below), whose sum is σ = 4198848. Its totient is φ = 3092544.

The previous prime is 3640937. The next prime is 3640991. The reversal of 3640973 is 3790463.

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

It is not a de Polignac number, because 3640973 - 2⁶ = 3640909 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3640933) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 1511 + ... + 3092.

It is an arithmetic number, because the mean of its divisors is an integer number (524856).

Almost surely, 2^3640973 is an apocalyptic number.

It is an amenable number.

3640973 is a deficient number, since it is larger than the sum of its proper divisors (557875).

3640973 is a wasteful number, since it uses less digits than its factorization.

3640973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4723.

The product of its (nonzero) digits is 13608, while the sum is 32.

The square root of 3640973 is about 1908.1333810822. The cubic root of 3640973 is about 153.8411388173.

The spelling of 3640973 in words is "three million, six hundred forty thousand, nine hundred seventy-three".