6690242 has 32 divisors (see below), whose sum is σ = 11793600. Its totient is φ = 2818368.

The previous prime is 6690239. The next prime is 6690247. The reversal of 6690242 is 2420966.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is not an unprimeable number, because it can be changed into a prime (6690247) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14093 + ... + 14559.

It is an arithmetic number, because the mean of its divisors is an integer number (368550).

Almost surely, 2^6690242 is an apocalyptic number.

6690242 is a deficient number, since it is larger than the sum of its proper divisors (5103358).

6690242 is a wasteful number, since it uses less digits than its factorization.

6690242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 530.

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 6690242 is about 2586.5502121552. The cubic root of 6690242 is about 188.4287971572.

The spelling of 6690242 in words is "six million, six hundred ninety thousand, two hundred forty-two".