6642804615 has 8 divisors (see below), whose sum is σ = 10628487408. Its totient is φ = 3542829120.

The previous prime is 6642804599. The next prime is 6642804617. The reversal of 6642804615 is 5164082466.

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

It is not a de Polignac number, because 6642804615 - 2⁴ = 6642804599 is a prime.

It is a super-3 number, since 3×6642804615³ (a number of 30 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6642804617) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 221426806 + ... + 221426835.

It is an arithmetic number, because the mean of its divisors is an integer number (1328560926).

Almost surely, 2^6642804615 is an apocalyptic number.

6642804615 is a deficient number, since it is larger than the sum of its proper divisors (3985682793).

6642804615 is a wasteful number, since it uses less digits than its factorization.

6642804615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 442853649.

The product of its (nonzero) digits is 276480, while the sum is 42.

The square root of 6642804615 is about 81503.4024749887. The cubic root of 6642804615 is about 1879.8238682699.

The spelling of 6642804615 in words is "six billion, six hundred forty-two million, eight hundred four thousand, six hundred fifteen".