3727021 has 4 divisors (see below), whose sum is σ = 3923200. Its totient is φ = 3530844.

The previous prime is 3727019. The next prime is 3727027. The reversal of 3727021 is 1207273.

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 3727021 - 2¹ = 3727019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3726983 and 3727001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3727027) 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, 98061 + ... + 98098.

It is an arithmetic number, because the mean of its divisors is an integer number (980800).

Almost surely, 2^3727021 is an apocalyptic number.

It is an amenable number.

3727021 is a deficient number, since it is larger than the sum of its proper divisors (196179).

3727021 is a wasteful number, since it uses less digits than its factorization.

3727021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196178.

The product of its (nonzero) digits is 588, while the sum is 22.

The square root of 3727021 is about 1930.5494036673. The cubic root of 3727021 is about 155.0436366907.

The spelling of 3727021 in words is "three million, seven hundred twenty-seven thousand, twenty-one".