3713688021 has 4 divisors (see below), whose sum is σ = 4951584032. Its totient is φ = 2475792012.

The previous prime is 3713687983. The next prime is 3713688053. The reversal of 3713688021 is 1208863173.

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 not a de Polignac number, because 3713688021 - 2¹³ = 3713679829 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3713618021) 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, 618948001 + ... + 618948006.

It is an arithmetic number, because the mean of its divisors is an integer number (1237896008).

Almost surely, 2^3713688021 is an apocalyptic number.

It is an amenable number.

3713688021 is a deficient number, since it is larger than the sum of its proper divisors (1237896011).

3713688021 is a wasteful number, since it uses less digits than its factorization.

3713688021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1237896010.

The product of its (nonzero) digits is 48384, while the sum is 39.

The square root of 3713688021 is about 60940.0362733729. The cubic root of 3713688021 is about 1548.5853233075.

The spelling of 3713688021 in words is "three billion, seven hundred thirteen million, six hundred eighty-eight thousand, twenty-one".