6640485 has 8 divisors (see below), whose sum is σ = 10624800. Its totient is φ = 3541584.

The previous prime is 6640477. The next prime is 6640493. The reversal of 6640485 is 5840466.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (6640477) and next prime (6640493).

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

It is not a de Polignac number, because 6640485 - 2³ = 6640477 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 221335 + ... + 221364.

It is an arithmetic number, because the mean of its divisors is an integer number (1328100).

Almost surely, 2^6640485 is an apocalyptic number.

It is an amenable number.

6640485 is a deficient number, since it is larger than the sum of its proper divisors (3984315).

6640485 is a wasteful number, since it uses less digits than its factorization.

6640485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 442707.

The product of its (nonzero) digits is 23040, while the sum is 33.

The square root of 6640485 is about 2576.9138518779. The cubic root of 6640485 is about 187.9605036238.

The spelling of 6640485 in words is "six million, six hundred forty thousand, four hundred eighty-five".