3754707721 has 4 divisors (see below), whose sum is σ = 3783369744. Its totient is φ = 3726045700.

The previous prime is 3754707709. The next prime is 3754707727. The reversal of 3754707721 is 1277074573.

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 3754707721 - 2⁵ = 3754707689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3754707727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14330815 + ... + 14331076.

It is an arithmetic number, because the mean of its divisors is an integer number (945842436).

Almost surely, 2^3754707721 is an apocalyptic number.

It is an amenable number.

3754707721 is a deficient number, since it is larger than the sum of its proper divisors (28662023).

3754707721 is a wasteful number, since it uses less digits than its factorization.

3754707721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28662022.

The product of its (nonzero) digits is 288120, while the sum is 43.

The square root of 3754707721 is about 61275.6698943390. The cubic root of 3754707721 is about 1554.2661137191.

The spelling of 3754707721 in words is "three billion, seven hundred fifty-four million, seven hundred seven thousand, seven hundred twenty-one".