6620146542 has 48 divisors (see below), whose sum is σ = 14420467152. Its totient is φ = 2194928640.

The previous prime is 6620146537. The next prime is 6620146543. The reversal of 6620146542 is 2456410266.

It is a junction number, because it is equal to n+sod(n) for n = 6620146497 and 6620146506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6620146543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5439118 + ... + 5440334.

It is an arithmetic number, because the mean of its divisors is an integer number (300426399).

Almost surely, 2^6620146542 is an apocalyptic number.

6620146542 is an abundant number, since it is smaller than the sum of its proper divisors (7800320610).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6620146542 is a wasteful number, since it uses less digits than its factorization.

6620146542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2593 (or 2590 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 36.

The square root of 6620146542 is about 81364.2829624891. The cubic root of 6620146542 is about 1877.6841241811.

The spelling of 6620146542 in words is "six billion, six hundred twenty million, one hundred forty-six thousand, five hundred forty-two".