6620646062445 has 8 divisors (see below), whose sum is σ = 10593033699936. Its totient is φ = 3531011233296.

The previous prime is 6620646062399. The next prime is 6620646062473. The reversal of 6620646062445 is 5442606460266.

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

It is not a de Polignac number, because 6620646062445 - 2⁸ = 6620646062189 is a prime.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 220688202067 + ... + 220688202096.

It is an arithmetic number, because the mean of its divisors is an integer number (1324129212492).

Almost surely, 2^{6620646062445} is an apocalyptic number.

It is an amenable number.

6620646062445 is a deficient number, since it is larger than the sum of its proper divisors (3972387637491).

6620646062445 is a wasteful number, since it uses less digits than its factorization.

6620646062445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 441376404171.

The product of its (nonzero) digits is 9953280, while the sum is 51.

The spelling of 6620646062445 in words is "six trillion, six hundred twenty billion, six hundred forty-six million, sixty-two thousand, four hundred forty-five".