7144668 has 18 divisors (see below), whose sum is σ = 18060224. Its totient is φ = 2381544.

The previous prime is 7144637. The next prime is 7144691. The reversal of 7144668 is 8664417.

7144668 is nontrivially palindromic in base 5.

It is a tau number, because it is divible by the number of its divisors (18).

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 198463 = 7144668 / (7 + 1 + 4 + 4 + 6 + 6 + 8).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 99196 + ... + 99267.

Almost surely, 2^7144668 is an apocalyptic number.

It is an amenable number.

7144668 is an abundant number, since it is smaller than the sum of its proper divisors (10915556).

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

7144668 is a wasteful number, since it uses less digits than its factorization.

7144668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198473 (or 198468 counting only the distinct ones).

The product of its digits is 32256, while the sum is 36.

The square root of 7144668 is about 2672.9511780053. The cubic root of 7144668 is about 192.6019519540.

The spelling of 7144668 in words is "seven million, one hundred forty-four thousand, six hundred sixty-eight".