3664015645 has 8 divisors (see below), whose sum is σ = 4398064056. Its totient is φ = 2930382336.

The previous prime is 3664015573. The next prime is 3664015657. The reversal of 3664015645 is 5465104663.

3664015645 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 825470361 + 2838545284 = 28731^2 + 53278^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3664015645 - 2⁷ = 3664015517 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3664015598 and 3664015607.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 84012 + ... + 119941.

It is an arithmetic number, because the mean of its divisors is an integer number (549758007).

Almost surely, 2^3664015645 is an apocalyptic number.

It is an amenable number.

3664015645 is a deficient number, since it is larger than the sum of its proper divisors (734048411).

3664015645 is a wasteful number, since it uses less digits than its factorization.

3664015645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207551.

The product of its (nonzero) digits is 259200, while the sum is 40.

The square root of 3664015645 is about 60531.1130328858. The cubic root of 3664015645 is about 1541.6499498682.

The spelling of 3664015645 in words is "three billion, six hundred sixty-four million, fifteen thousand, six hundred forty-five".