6620395523 has 16 divisors (see below), whose sum is σ = 7639769280. Its totient is φ = 5619511296.

The previous prime is 6620395517. The next prime is 6620395531. The reversal of 6620395523 is 3255930266.

6620395523 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 6620395523 - 2¹⁶ = 6620329987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6620395543) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1127411 + ... + 1133267.

It is an arithmetic number, because the mean of its divisors is an integer number (477485580).

Almost surely, 2^6620395523 is an apocalyptic number.

6620395523 is a deficient number, since it is larger than the sum of its proper divisors (1019373757).

6620395523 is a wasteful number, since it uses less digits than its factorization.

6620395523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7406.

The product of its (nonzero) digits is 291600, while the sum is 41.

The square root of 6620395523 is about 81365.8129867821. The cubic root of 6620395523 is about 1877.7076635296.

The spelling of 6620395523 in words is "six billion, six hundred twenty million, three hundred ninety-five thousand, five hundred twenty-three".