2720878166 has 8 divisors (see below), whose sum is σ = 4296123480. Its totient is φ = 1288837008.

The previous prime is 2720878163. The next prime is 2720878177. The reversal of 2720878166 is 6618780272.

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

It is a self number, because there is not a number n which added to its sum of digits gives 2720878166.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2720878163) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35800991 + ... + 35801066.

It is an arithmetic number, because the mean of its divisors is an integer number (537015435).

Almost surely, 2^2720878166 is an apocalyptic number.

2720878166 is a deficient number, since it is larger than the sum of its proper divisors (1575245314).

2720878166 is a wasteful number, since it uses less digits than its factorization.

2720878166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71602078.

The product of its (nonzero) digits is 451584, while the sum is 47.

The square root of 2720878166 is about 52162.0375944038. The cubic root of 2720878166 is about 1396.0566184074.

The spelling of 2720878166 in words is "two billion, seven hundred twenty million, eight hundred seventy-eight thousand, one hundred sixty-six".