6634920 has 32 divisors (see below), whose sum is σ = 19905120. Its totient is φ = 1769280.

The previous prime is 6634891. The next prime is 6634921. The reversal of 6634920 is 294366.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (6634921) 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, 27526 + ... + 27765.

It is an arithmetic number, because the mean of its divisors is an integer number (622035).

Almost surely, 2^6634920 is an apocalyptic number.

6634920 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6634920 is an abundant number, since it is smaller than the sum of its proper divisors (13270200).

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

6634920 is a wasteful number, since it uses less digits than its factorization.

6634920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55305 (or 55301 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 30.

The square root of 6634920 is about 2575.8338455731. The cubic root of 6634920 is about 187.9079827344.

The spelling of 6634920 in words is "six million, six hundred thirty-four thousand, nine hundred twenty".