3897222065 has 8 divisors (see below), whose sum is σ = 5101818048. Its totient is φ = 2834343280.

The previous prime is 3897222047. The next prime is 3897222151. The reversal of 3897222065 is 5602227983.

3897222065 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 3897222065 - 2²⁴ = 3880444849 is a prime.

It is a Duffinian number.

It is a Curzon 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, 35429237 + ... + 35429346.

It is an arithmetic number, because the mean of its divisors is an integer number (637727256).

Almost surely, 2^3897222065 is an apocalyptic number.

It is an amenable number.

3897222065 is a deficient number, since it is larger than the sum of its proper divisors (1204595983).

3897222065 is a wasteful number, since it uses less digits than its factorization.

3897222065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70858599.

The product of its (nonzero) digits is 362880, while the sum is 44.

The square root of 3897222065 is about 62427.7347418597. The cubic root of 3897222065 is about 1573.6870980399.

The spelling of 3897222065 in words is "three billion, eight hundred ninety-seven million, two hundred twenty-two thousand, sixty-five".