6629705 has 4 divisors (see below), whose sum is σ = 7955652. Its totient is φ = 5303760.

The previous prime is 6629687. The next prime is 6629713. The reversal of 6629705 is 5079266.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5079266 = 2 ⋅2539633.

It can be written as a sum of positive squares in 2 ways, for example, as 1394761 + 5234944 = 1181^2 + 2288^2 .

It is not a de Polignac number, because 6629705 - 2¹⁶ = 6564169 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 662966 + ... + 662975.

It is an arithmetic number, because the mean of its divisors is an integer number (1988913).

Almost surely, 2^6629705 is an apocalyptic number.

It is an amenable number.

6629705 is a deficient number, since it is larger than the sum of its proper divisors (1325947).

6629705 is a wasteful number, since it uses less digits than its factorization.

6629705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1325946.

The product of its (nonzero) digits is 22680, while the sum is 35.

The square root of 6629705 is about 2574.8213530263. The cubic root of 6629705 is about 187.8587383836.

The spelling of 6629705 in words is "six million, six hundred twenty-nine thousand, seven hundred five".