2645241660 has 72 divisors (see below), whose sum is σ = 8175323520. Its totient is φ = 692085888.

The previous prime is 2645241653. The next prime is 2645241679. The reversal of 2645241660 is 661425462.

2645241660 is a `hidden beast` number, since 2 + 64 + 524 + 16 + 60 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 129100 + ... + 148179.

It is an arithmetic number, because the mean of its divisors is an integer number (113546160).

Almost surely, 2^2645241660 is an apocalyptic number.

2645241660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2645241660 is an abundant number, since it is smaller than the sum of its proper divisors (5530081860).

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

2645241660 is a wasteful number, since it uses less digits than its factorization.

2645241660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 277347 (or 277342 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 36.

The square root of 2645241660 is about 51431.9128557358. The cubic root of 2645241660 is about 1382.9987405155.

The spelling of 2645241660 in words is "two billion, six hundred forty-five million, two hundred forty-one thousand, six hundred sixty".