2660501645 has 8 divisors (see below), whose sum is σ = 3208646400. Its totient is φ = 2117705040.

The previous prime is 2660501629. The next prime is 2660501651. The reversal of 2660501645 is 5461050662.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2660501645 - 2⁴ = 2660501629 is a prime.

It is a super-3 number, since 3×2660501645³ (a number of 29 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1335941 + ... + 1337930.

It is an arithmetic number, because the mean of its divisors is an integer number (401080800).

Almost surely, 2^2660501645 is an apocalyptic number.

It is an amenable number.

2660501645 is a deficient number, since it is larger than the sum of its proper divisors (548144755).

2660501645 is a wasteful number, since it uses less digits than its factorization.

2660501645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2674075.

The product of its (nonzero) digits is 43200, while the sum is 35.

The square root of 2660501645 is about 51580.0508433251. The cubic root of 2660501645 is about 1385.6530772933.

The spelling of 2660501645 in words is "two billion, six hundred sixty million, five hundred one thousand, six hundred forty-five".