2166667632 has 60 divisors (see below), whose sum is σ = 6211571184. Its totient is φ = 704605440.

The previous prime is 2166667631. The next prime is 2166667639. The reversal of 2166667632 is 2367666612.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2166667631) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 177588 + ... + 189395.

Almost surely, 2^2166667632 is an apocalyptic number.

It is an amenable number.

2166667632 is an abundant number, since it is smaller than the sum of its proper divisors (4044903552).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2166667632 is a wasteful number, since it uses less digits than its factorization.

2166667632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 367038 (or 367029 counting only the distinct ones).

The product of its digits is 653184, while the sum is 45.

The square root of 2166667632 is about 46547.4771819054. The cubic root of 2166667632 is about 1293.9895382834.

It can be divided in two parts, 21666 and 67632, that added together give a palindrome (89298).

The spelling of 2166667632 in words is "two billion, one hundred sixty-six million, six hundred sixty-seven thousand, six hundred thirty-two".