6661508 has 12 divisors (see below), whose sum is σ = 13323072. Its totient is φ = 2854920.

The previous prime is 6661493. The next prime is 6661511. The reversal of 6661508 is 8051666.

6661508 is an admirable number.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

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, 118928 + ... + 118983.

It is an arithmetic number, because the mean of its divisors is an integer number (1110256).

Almost surely, 2^6661508 is an apocalyptic number.

It is an amenable number.

6661508 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

6661508 is a wasteful number, since it uses less digits than its factorization.

6661508 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237922 (or 237920 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 6661508 is about 2580.9897326413. The cubic root of 6661508 is about 188.1586483375.

The spelling of 6661508 in words is "six million, six hundred sixty-one thousand, five hundred eight".