7140664 has 16 divisors (see below), whose sum is σ = 13821120. Its totient is φ = 3455040.

The previous prime is 7140647. The next prime is 7140671. The reversal of 7140664 is 4660417.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14149 + ... + 14644.

It is an arithmetic number, because the mean of its divisors is an integer number (863820).

Almost surely, 2^7140664 is an apocalyptic number.

It is an amenable number.

7140664 is a deficient number, since it is larger than the sum of its proper divisors (6680456).

7140664 is a wasteful number, since it uses less digits than its factorization.

7140664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28830 (or 28826 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 7140664 is about 2672.2020881662. The cubic root of 7140664 is about 192.5659660355.

The spelling of 7140664 in words is "seven million, one hundred forty thousand, six hundred sixty-four".