3720723 has 4 divisors (see below), whose sum is σ = 4960968. Its totient is φ = 2480480.

The previous prime is 3720707. The next prime is 3720767. The reversal of 3720723 is 3270273.

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 3720723 - 2⁴ = 3720707 is a prime.

It is a D-number.

It is a junction number, because it is equal to n+sod(n) for n = 3720693 and 3720702.

It is not an unprimeable number, because it can be changed into a prime (3720023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 620118 + ... + 620123.

It is an arithmetic number, because the mean of its divisors is an integer number (1240242).

Almost surely, 2^3720723 is an apocalyptic number.

3720723 is a deficient number, since it is larger than the sum of its proper divisors (1240245).

3720723 is a wasteful number, since it uses less digits than its factorization.

3720723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1240244.

The product of its (nonzero) digits is 1764, while the sum is 24.

The square root of 3720723 is about 1928.9175721114. The cubic root of 3720723 is about 154.9562554321.

Adding to 3720723 its reverse (3270273), we get a palindrome (6990996).

The spelling of 3720723 in words is "three million, seven hundred twenty thousand, seven hundred twenty-three".