2667485978 has 16 divisors (see below), whose sum is σ = 4016844384. Its totient is φ = 1328549040.

The previous prime is 2667485971. The next prime is 2667485983. The reversal of 2667485978 is 8795847662.

It is a self number, because there is not a number n which added to its sum of digits gives 2667485978.

It is not an unprimeable number, because it can be changed into a prime (2667485971) 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, 589601 + ... + 594107.

It is an arithmetic number, because the mean of its divisors is an integer number (251052774).

Almost surely, 2^2667485978 is an apocalyptic number.

2667485978 is a deficient number, since it is larger than the sum of its proper divisors (1349358406).

2667485978 is a wasteful number, since it uses less digits than its factorization.

2667485978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5597.

The product of its digits is 40642560, while the sum is 62.

The square root of 2667485978 is about 51647.7102880660. The cubic root of 2667485978 is about 1386.8645538465.

The spelling of 2667485978 in words is "two billion, six hundred sixty-seven million, four hundred eighty-five thousand, nine hundred seventy-eight".