2646464980 has 24 divisors (see below), whose sum is σ = 5561839080. Its totient is φ = 1057774080.

The previous prime is 2646464957. The next prime is 2646464983. The reversal of 2646464980 is 894646462.

It can be written as a sum of positive squares in 4 ways, for example, as 143664196 + 2502800784 = 11986^2 + 50028^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2646464983) 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, 23665 + ... + 76504.

It is an arithmetic number, because the mean of its divisors is an integer number (231743295).

Almost surely, 2^2646464980 is an apocalyptic number.

2646464980 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2646464980 is an abundant number, since it is smaller than the sum of its proper divisors (2915374100).

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

2646464980 is a wasteful number, since it uses less digits than its factorization.

2646464980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101499 (or 101497 counting only the distinct ones).

The product of its (nonzero) digits is 1990656, while the sum is 49.

The square root of 2646464980 is about 51443.8040972866. The cubic root of 2646464980 is about 1383.2119017939.

The spelling of 2646464980 in words is "two billion, six hundred forty-six million, four hundred sixty-four thousand, nine hundred eighty".