8741721737 has 4 divisors (see below), whose sum is σ = 9990539136. Its totient is φ = 7492904340.

The previous prime is 8741721701. The next prime is 8741721763. The reversal of 8741721737 is 7371271478.

It is a happy number.

8741721737 is digitally balanced in base 3, 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 8741721737 - 2²⁸ = 8473286281 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 8741721691 and 8741721700.

It is not an unprimeable number, because it can be changed into a prime (8741721797) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 624408689 + ... + 624408702.

It is an arithmetic number, because the mean of its divisors is an integer number (2497634784).

Almost surely, 2^8741721737 is an apocalyptic number.

It is an amenable number.

8741721737 is a deficient number, since it is larger than the sum of its proper divisors (1248817399).

8741721737 is a wasteful number, since it uses less digits than its factorization.

8741721737 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1248817398.

The product of its digits is 460992, while the sum is 47.

The square root of 8741721737 is about 93497.1750214946. The cubic root of 8741721737 is about 2059.9925956469.

The spelling of 8741721737 in words is "eight billion, seven hundred forty-one million, seven hundred twenty-one thousand, seven hundred thirty-seven".