3706548521 has 4 divisors (see below), whose sum is σ = 3991667652. Its totient is φ = 3421429392.

The previous prime is 3706548491. The next prime is 3706548553. The reversal of 3706548521 is 1258456073.

3706548521 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.

It can be written as a sum of positive squares in 2 ways, for example, as 829728025 + 2876820496 = 28805^2 + 53636^2 .

It is a cyclic number.

It is not a de Polignac number, because 3706548521 - 2¹⁸ = 3706286377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3706548581) 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, 142559546 + ... + 142559571.

It is an arithmetic number, because the mean of its divisors is an integer number (997916913).

Almost surely, 2^3706548521 is an apocalyptic number.

It is an amenable number.

3706548521 is a deficient number, since it is larger than the sum of its proper divisors (285119131).

3706548521 is a wasteful number, since it uses less digits than its factorization.

3706548521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285119130.

The product of its (nonzero) digits is 201600, while the sum is 41.

The square root of 3706548521 is about 60881.4300176992. The cubic root of 3706548521 is about 1547.5923106564.

The spelling of 3706548521 in words is "three billion, seven hundred six million, five hundred forty-eight thousand, five hundred twenty-one".