3640197 has 16 divisors (see below), whose sum is σ = 5409792. Its totient is φ = 2158320.

The previous prime is 3640181. The next prime is 3640207. The reversal of 3640197 is 7910463.

It is a happy number.

It is not a de Polignac number, because 3640197 - 2⁴ = 3640181 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3640597) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 378 + ... + 2724.

It is an arithmetic number, because the mean of its divisors is an integer number (338112).

Almost surely, 2^3640197 is an apocalyptic number.

It is an amenable number.

3640197 is a deficient number, since it is larger than the sum of its proper divisors (1769595).

3640197 is a wasteful number, since it uses less digits than its factorization.

3640197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2408.

The product of its (nonzero) digits is 4536, while the sum is 30.

The square root of 3640197 is about 1907.9300301636. The cubic root of 3640197 is about 153.8302086615.

The spelling of 3640197 in words is "three million, six hundred forty thousand, one hundred ninety-seven".