4687921966 has 32 divisors (see below), whose sum is σ = 8670187008. Its totient is φ = 1851228000.

The previous prime is 4687921961. The next prime is 4687921981. The reversal of 4687921966 is 6691297864.

It is a happy number.

It is a super-2 number, since 2×4687921966² = 43953224718610610312, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 4687921966.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4687921961) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 79591 + ... + 125341.

It is an arithmetic number, because the mean of its divisors is an integer number (270943344).

Almost surely, 2^4687921966 is an apocalyptic number.

4687921966 is a deficient number, since it is larger than the sum of its proper divisors (3982265042).

4687921966 is a wasteful number, since it uses less digits than its factorization.

4687921966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46336.

The product of its digits is 7838208, while the sum is 58.

The square root of 4687921966 is about 68468.4012227538. The cubic root of 4687921966 is about 1673.6325919998.

The spelling of 4687921966 in words is "four billion, six hundred eighty-seven million, nine hundred twenty-one thousand, nine hundred sixty-six".