2147969665 has 16 divisors (see below), whose sum is σ = 2733952320. Its totient is φ = 1615498560.

The previous prime is 2147969657. The next prime is 2147969671. The reversal of 2147969665 is 5669697412.

It is a happy number.

It is not a de Polignac number, because 2147969665 - 2³ = 2147969657 is a prime.

It is a super-2 number, since 2×2147969665² = 9227547363520424450, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 73854 + ... + 98743.

It is an arithmetic number, because the mean of its divisors is an integer number (170872020).

Almost surely, 2^2147969665 is an apocalyptic number.

It is an amenable number.

2147969665 is a deficient number, since it is larger than the sum of its proper divisors (585982655).

2147969665 is a wasteful number, since it uses less digits than its factorization.

2147969665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172752.

The product of its digits is 4898880, while the sum is 55.

The square root of 2147969665 is about 46346.1936409022. The cubic root of 2147969665 is about 1290.2564770572.

The spelling of 2147969665 in words is "two billion, one hundred forty-seven million, nine hundred sixty-nine thousand, six hundred sixty-five".