2147638066 has 16 divisors (see below), whose sum is σ = 3688744320. Its totient is φ = 918646560.

The previous prime is 2147638061. The next prime is 2147638081. The reversal of 2147638066 is 6608367412.

It is a super-2 number, since 2×2147638066² = 9224698525064440712, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2147638061) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 139926 + ... + 154513.

It is an arithmetic number, because the mean of its divisors is an integer number (230546520).

Almost surely, 2^2147638066 is an apocalyptic number.

2147638066 is a deficient number, since it is larger than the sum of its proper divisors (1541106254).

2147638066 is a wasteful number, since it uses less digits than its factorization.

2147638066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 294969.

The product of its (nonzero) digits is 290304, while the sum is 43.

The square root of 2147638066 is about 46342.6160892973. The cubic root of 2147638066 is about 1290.1900779543.

The spelling of 2147638066 in words is "two billion, one hundred forty-seven million, six hundred thirty-eight thousand, sixty-six".