3657123 has 8 divisors (see below), whose sum is σ = 5418000. Its totient is φ = 2438064.

The previous prime is 3657119. The next prime is 3657131. The reversal of 3657123 is 3217563.

It is a happy number.

3657123 is a `hidden beast` number, since 3 + 657 + 1 + 2 + 3 = 666.

It is not a de Polignac number, because 3657123 - 2² = 3657119 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 135449 = 3657123 / (3 + 6 + 5 + 7 + 1 + 2 + 3).

3657123 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (3657223) 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, 67698 + ... + 67751.

It is an arithmetic number, because the mean of its divisors is an integer number (677250).

Almost surely, 2^3657123 is an apocalyptic number.

3657123 is a deficient number, since it is larger than the sum of its proper divisors (1760877).

3657123 is a wasteful number, since it uses less digits than its factorization.

3657123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135458 (or 135452 counting only the distinct ones).

The product of its digits is 3780, while the sum is 27.

The square root of 3657123 is about 1912.3605831537. The cubic root of 3657123 is about 154.0682639958.

The spelling of 3657123 in words is "three million, six hundred fifty-seven thousand, one hundred twenty-three".