6690254 has 4 divisors (see below), whose sum is σ = 10035384. Its totient is φ = 3345126.

The previous prime is 6690251. The next prime is 6690269. The reversal of 6690254 is 4520966.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 4520966 = 2 ⋅2260483.

It is a self number, because there is not a number n which added to its sum of digits gives 6690254.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6690251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1672562 + ... + 1672565.

It is an arithmetic number, because the mean of its divisors is an integer number (2508846).

Almost surely, 2^6690254 is an apocalyptic number.

6690254 is a deficient number, since it is larger than the sum of its proper divisors (3345130).

6690254 is a wasteful number, since it uses less digits than its factorization.

6690254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3345129.

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 6690254 is about 2586.5525318462. The cubic root of 6690254 is about 188.4289098160.

The spelling of 6690254 in words is "six million, six hundred ninety thousand, two hundred fifty-four".