3640123 has 8 divisors (see below), whose sum is σ = 3744000. Its totient is φ = 3537768.

The previous prime is 3640121. The next prime is 3640151. The reversal of 3640123 is 3210463.

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

It is a cyclic number.

It is not a de Polignac number, because 3640123 - 2¹ = 3640121 is a prime.

It is a Duffinian number.

3640123 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 3640123.

It is not an unprimeable number, because it can be changed into a prime (3640121) 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, 5778 + ... + 6376.

It is an arithmetic number, because the mean of its divisors is an integer number (468000).

Almost surely, 2^3640123 is an apocalyptic number.

3640123 is a deficient number, since it is larger than the sum of its proper divisors (103877).

3640123 is a wasteful number, since it uses less digits than its factorization.

3640123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 761.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 3640123 is about 1907.9106373203. The cubic root of 3640123 is about 153.8291662717.

Adding to 3640123 its reverse (3210463), we get a palindrome (6850586).

The spelling of 3640123 in words is "three million, six hundred forty thousand, one hundred twenty-three".