7664145 has 8 divisors (see below), whose sum is σ = 12262656. Its totient is φ = 4087536.

The previous prime is 7664123. The next prime is 7664147. The reversal of 7664145 is 5414667.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 7664145 - 2⁹ = 7663633 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7664147) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 255457 + ... + 255486.

It is an arithmetic number, because the mean of its divisors is an integer number (1532832).

Almost surely, 2^7664145 is an apocalyptic number.

It is an amenable number.

7664145 is a deficient number, since it is larger than the sum of its proper divisors (4598511).

7664145 is a wasteful number, since it uses less digits than its factorization.

7664145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 510951.

The product of its digits is 20160, while the sum is 33.

The square root of 7664145 is about 2768.4192240338. The cubic root of 7664145 is about 197.1611022962.

The spelling of 7664145 in words is "seven million, six hundred sixty-four thousand, one hundred forty-five".