2664026645 has 16 divisors (see below), whose sum is σ = 3668820480. Its totient is φ = 1819112064.

The previous prime is 2664026639. The next prime is 2664026657. The reversal of 2664026645 is 5466204662.

2664026645 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2664026645 - 2⁶ = 2664026581 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 150872 + ... + 167601.

It is an arithmetic number, because the mean of its divisors is an integer number (229301280).

Almost surely, 2^2664026645 is an apocalyptic number.

It is an amenable number.

2664026645 is a deficient number, since it is larger than the sum of its proper divisors (1004793835).

2664026645 is a wasteful number, since it uses less digits than its factorization.

2664026645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318724.

The product of its (nonzero) digits is 414720, while the sum is 41.

The square root of 2664026645 is about 51614.2097198049. The cubic root of 2664026645 is about 1386.2647754048.

The spelling of 2664026645 in words is "two billion, six hundred sixty-four million, twenty-six thousand, six hundred forty-five".