6620595447 has 16 divisors (see below), whose sum is σ = 9358057440. Its totient is φ = 4149061632.

The previous prime is 6620595431. The next prime is 6620595461. The reversal of 6620595447 is 7445950266.

6620595447 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 6620595447 - 2⁴ = 6620595431 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6620595396 and 6620595405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6620595427) 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, 36018 + ... + 120575.

It is an arithmetic number, because the mean of its divisors is an integer number (584878590).

Almost surely, 2^6620595447 is an apocalyptic number.

6620595447 is a deficient number, since it is larger than the sum of its proper divisors (2737461993).

6620595447 is a wasteful number, since it uses less digits than its factorization.

6620595447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157442.

The product of its (nonzero) digits is 1814400, while the sum is 48.

The square root of 6620595447 is about 81367.0415278815. The cubic root of 6620595447 is about 1877.7265644672.

The spelling of 6620595447 in words is "six billion, six hundred twenty million, five hundred ninety-five thousand, four hundred forty-seven".