3763627721 has 6 divisors (see below), whose sum is σ = 4378097610. Its totient is φ = 3225966576.

The previous prime is 3763627709. The next prime is 3763627849. The reversal of 3763627721 is 1277263673.

It can be written as a sum of positive squares in only one way, i.e., 3601320121 + 162307600 = 60011^2 + 12740^2 .

It is not a de Polignac number, because 3763627721 - 2¹⁸ = 3763365577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3763627921) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 38404316 + ... + 38404413.

It is an arithmetic number, because the mean of its divisors is an integer number (729682935).

Almost surely, 2^3763627721 is an apocalyptic number.

It is an amenable number.

3763627721 is a deficient number, since it is larger than the sum of its proper divisors (614469889).

3763627721 is an equidigital number, since it uses as much as digits as its factorization.

3763627721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76808743 (or 76808736 counting only the distinct ones).

The product of its digits is 444528, while the sum is 44.

The square root of 3763627721 is about 61348.4125385490. The cubic root of 3763627721 is about 1555.4959555035.

The spelling of 3763627721 in words is "three billion, seven hundred sixty-three million, six hundred twenty-seven thousand, seven hundred twenty-one".