2660623522 has 8 divisors (see below), whose sum is σ = 4225696236. Its totient is φ = 1252058112.

The previous prime is 2660623477. The next prime is 2660623613. The reversal of 2660623522 is 2253260662.

2660623522 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 2620313721 + 40309801 = 51189^2 + 6349^2 .

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

It is a Harshad number since it is a multiple of its sum of digits (34), and also a Moran number because the ratio is a prime number: 78253633 = 2660623522 / (2 + 6 + 6 + 0 + 6 + 2 + 3 + 5 + 2 + 2).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39126783 + ... + 39126850.

Almost surely, 2^2660623522 is an apocalyptic number.

2660623522 is a deficient number, since it is larger than the sum of its proper divisors (1565072714).

2660623522 is a wasteful number, since it uses less digits than its factorization.

2660623522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78253652.

The product of its (nonzero) digits is 51840, while the sum is 34.

The square root of 2660623522 is about 51581.2322652338. The cubic root of 2660623522 is about 1385.6742357919.

The spelling of 2660623522 in words is "two billion, six hundred sixty million, six hundred twenty-three thousand, five hundred twenty-two".