6620613456 has 60 divisors (see below), whose sum is σ = 17672889696. Its totient is φ = 2135666880.

The previous prime is 6620613443. The next prime is 6620613469. The reversal of 6620613456 is 6543160266.

It is an interprime number because it is at equal distance from previous prime (6620613443) and next prime (6620613469).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25636 + ... + 117891.

Almost surely, 2^6620613456 is an apocalyptic number.

It is an amenable number.

6620613456 is an abundant number, since it is smaller than the sum of its proper divisors (11052276240).

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

6620613456 is a wasteful number, since it uses less digits than its factorization.

6620613456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143600 (or 143563 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 39.

The square root of 6620613456 is about 81367.1521930072. The cubic root of 6620613456 is about 1877.7282670304.

The spelling of 6620613456 in words is "six billion, six hundred twenty million, six hundred thirteen thousand, four hundred fifty-six".