3665562215 has 16 divisors (see below), whose sum is σ = 5030206272. Its totient is φ = 2511953664.

The previous prime is 3665562191. The next prime is 3665562217. The reversal of 3665562215 is 5122655663.

It is a cyclic number.

It is not a de Polignac number, because 3665562215 - 2¹² = 3665558119 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3665562217) 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 15 ways as a sum of consecutive naturals, for example, 25307 + ... + 89283.

It is an arithmetic number, because the mean of its divisors is an integer number (314387892).

Almost surely, 2^3665562215 is an apocalyptic number.

3665562215 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

3665562215 is a deficient number, since it is larger than the sum of its proper divisors (1364644057).

3665562215 is a wasteful number, since it uses less digits than its factorization.

3665562215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65626.

The product of its digits is 324000, while the sum is 41.

The square root of 3665562215 is about 60543.8866856101. The cubic root of 3665562215 is about 1541.8668279612.

The spelling of 3665562215 in words is "three billion, six hundred sixty-five million, five hundred sixty-two thousand, two hundred fifteen".