6629948877 has 4 divisors (see below), whose sum is σ = 8839931840. Its totient is φ = 4419965916.

The previous prime is 6629948861. The next prime is 6629948909. The reversal of 6629948877 is 7788499266.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 6629948877 - 2⁴ = 6629948861 is a prime.

It is a super-2 number, since 2×6629948877² = 87912444223267122258, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6629948807) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1104991477 + ... + 1104991482.

It is an arithmetic number, because the mean of its divisors is an integer number (2209982960).

Almost surely, 2^6629948877 is an apocalyptic number.

It is an amenable number.

6629948877 is a deficient number, since it is larger than the sum of its proper divisors (2209982963).

6629948877 is a wasteful number, since it uses less digits than its factorization.

6629948877 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2209982962.

The product of its digits is 73156608, while the sum is 66.

The square root of 6629948877 is about 81424.4980150323. The cubic root of 6629948877 is about 1878.6104184774.

The spelling of 6629948877 in words is "six billion, six hundred twenty-nine million, nine hundred forty-eight thousand, eight hundred seventy-seven".