6629491 has 8 divisors (see below), whose sum is σ = 7386624. Its totient is φ = 5898120.

The previous prime is 6629479. The next prime is 6629509. The reversal of 6629491 is 1949266.

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

It is a cyclic number.

It is not a de Polignac number, because 6629491 - 2¹¹ = 6627443 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6629491.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6629411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5895 + ... + 6928.

It is an arithmetic number, because the mean of its divisors is an integer number (923328).

Almost surely, 2^6629491 is an apocalyptic number.

6629491 is a deficient number, since it is larger than the sum of its proper divisors (757133).

6629491 is a wasteful number, since it uses less digits than its factorization.

6629491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12881.

The product of its digits is 23328, while the sum is 37.

The square root of 6629491 is about 2574.7797964098. The cubic root of 6629491 is about 187.8567170668.

It can be divided in two parts, 662 and 9491, that added together give a triangular number (10153 = T₁₄₂).

The spelling of 6629491 in words is "six million, six hundred twenty-nine thousand, four hundred ninety-one".