3651423 has 4 divisors (see below), whose sum is σ = 4868568. Its totient is φ = 2434280.

The previous prime is 3651409. The next prime is 3651443. The reversal of 3651423 is 3241563.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 3651423 - 2⁴ = 3651407 is a prime.

It is a D-number.

It is a junction number, because it is equal to n+sod(n) for n = 3651393 and 3651402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3651443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 608568 + ... + 608573.

It is an arithmetic number, because the mean of its divisors is an integer number (1217142).

Almost surely, 2^3651423 is an apocalyptic number.

3651423 is a deficient number, since it is larger than the sum of its proper divisors (1217145).

3651423 is a wasteful number, since it uses less digits than its factorization.

3651423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1217144.

The product of its digits is 2160, while the sum is 24.

The square root of 3651423 is about 1910.8696972845. The cubic root of 3651423 is about 153.9881786619.

Adding to 3651423 its reverse (3241563), we get a palindrome (6892986).

The spelling of 3651423 in words is "three million, six hundred fifty-one thousand, four hundred twenty-three".