3727026721 has 4 divisors (see below), whose sum is σ = 4065847344. Its totient is φ = 3388206100.

The previous prime is 3727026713. The next prime is 3727026781. The reversal of 3727026721 is 1276207273.

3727026721 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3727026721 - 2³ = 3727026713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3727026701) 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, 169410295 + ... + 169410316.

It is an arithmetic number, because the mean of its divisors is an integer number (1016461836).

Almost surely, 2^3727026721 is an apocalyptic number.

It is an amenable number.

3727026721 is a deficient number, since it is larger than the sum of its proper divisors (338820623).

3727026721 is a wasteful number, since it uses less digits than its factorization.

3727026721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 338820622.

The product of its (nonzero) digits is 49392, while the sum is 37.

The square root of 3727026721 is about 61049.3793662147. The cubic root of 3727026721 is about 1550.4371602164.

The spelling of 3727026721 in words is "three billion, seven hundred twenty-seven million, twenty-six thousand, seven hundred twenty-one".