2664770780 has 24 divisors (see below), whose sum is σ = 6395450208. Its totient is φ = 913635648.

The previous prime is 2664770761. The next prime is 2664770809. The reversal of 2664770780 is 870774662.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9516899 + ... + 9517178.

It is an arithmetic number, because the mean of its divisors is an integer number (266477092).

Almost surely, 2^2664770780 is an apocalyptic number.

2664770780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2664770780 is an abundant number, since it is smaller than the sum of its proper divisors (3730679428).

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

2664770780 is a wasteful number, since it uses less digits than its factorization.

2664770780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19034093 (or 19034091 counting only the distinct ones).

The product of its (nonzero) digits is 790272, while the sum is 47.

The square root of 2664770780 is about 51621.4178418222. The cubic root of 2664770780 is about 1386.3938371902.

The spelling of 2664770780 in words is "two billion, six hundred sixty-four million, seven hundred seventy thousand, seven hundred eighty".