3706547645 has 18 divisors (see below), whose sum is σ = 4697553978. Its totient is φ = 2807212608.

The previous prime is 3706547629. The next prime is 3706547657. The reversal of 3706547645 is 5467456073.

It can be written as a sum of positive squares in 3 ways, for example, as 1470108964 + 2236438681 = 38342^2 + 47291^2 .

It is not a de Polignac number, because 3706547645 - 2⁴ = 3706547629 is a prime.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3706547645.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 2585849 + ... + 2587281.

It is an arithmetic number, because the mean of its divisors is an integer number (260975221).

Almost surely, 2^3706547645 is an apocalyptic number.

It is an amenable number.

3706547645 is a deficient number, since it is larger than the sum of its proper divisors (991006333).

3706547645 is an frugal number, since it uses more digits than its factorization.

3706547645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2909 (or 1457 counting only the distinct ones).

The product of its (nonzero) digits is 2116800, while the sum is 47.

The square root of 3706547645 is about 60881.4228233868. The cubic root of 3706547645 is about 1547.5921887379.

The spelling of 3706547645 in words is "three billion, seven hundred six million, five hundred forty-seven thousand, six hundred forty-five".