3500723 has 4 divisors (see below), whose sum is σ = 3516240. Its totient is φ = 3485208.

The previous prime is 3500711. The next prime is 3500747. The reversal of 3500723 is 3270053.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3270053 = 137 ⋅23869.

It is a cyclic number.

It is not a de Polignac number, because 3500723 - 2²⁰ = 2452147 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3500695 and 3500704.

It is not an unprimeable number, because it can be changed into a prime (3500773) 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 3 ways as a sum of consecutive naturals, for example, 7415 + ... + 7872.

It is an arithmetic number, because the mean of its divisors is an integer number (879060).

Almost surely, 2^3500723 is an apocalyptic number.

3500723 is a deficient number, since it is larger than the sum of its proper divisors (15517).

3500723 is a wasteful number, since it uses less digits than its factorization.

3500723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15516.

The product of its (nonzero) digits is 630, while the sum is 20.

The square root of 3500723 is about 1871.0219132870. The cubic root of 3500723 is about 151.8399024160.

Adding to 3500723 its reverse (3270053), we get a palindrome (6770776).

The spelling of 3500723 in words is "three million, five hundred thousand, seven hundred twenty-three".