6620154879 has 16 divisors (see below), whose sum is σ = 9518768000. Its totient is φ = 4068410976.

The previous prime is 6620154847. The next prime is 6620154881. The reversal of 6620154879 is 9784510266.

It is not a de Polignac number, because 6620154879 - 2⁵ = 6620154847 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6620154809) 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, 86029 + ... + 143670.

It is an arithmetic number, because the mean of its divisors is an integer number (594923000).

Almost surely, 2^6620154879 is an apocalyptic number.

6620154879 is a deficient number, since it is larger than the sum of its proper divisors (2898613121).

6620154879 is a wasteful number, since it uses less digits than its factorization.

6620154879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230454.

The product of its (nonzero) digits is 725760, while the sum is 48.

The square root of 6620154879 is about 81364.3341950268. The cubic root of 6620154879 is about 1877.6849123935.

The spelling of 6620154879 in words is "six billion, six hundred twenty million, one hundred fifty-four thousand, eight hundred seventy-nine".