2660662654 has 48 divisors (see below), whose sum is σ = 4400256960. Its totient is φ = 1205867520.

The previous prime is 2660662619. The next prime is 2660662679. The reversal of 2660662654 is 4562660662.

It is a self number, because there is not a number n which added to its sum of digits gives 2660662654.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7249579 + ... + 7249945.

It is an arithmetic number, because the mean of its divisors is an integer number (91672020).

Almost surely, 2^2660662654 is an apocalyptic number.

2660662654 is a deficient number, since it is larger than the sum of its proper divisors (1739594306).

2660662654 is a wasteful number, since it uses less digits than its factorization.

2660662654 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 725 (or 712 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 43.

The square root of 2660662654 is about 51581.6115878517. The cubic root of 2660662654 is about 1385.6810291792.

The spelling of 2660662654 in words is "two billion, six hundred sixty million, six hundred sixty-two thousand, six hundred fifty-four".