7145664 has 28 divisors (see below), whose sum is σ = 18906744. Its totient is φ = 2381824.

The previous prime is 7145651. The next prime is 7145669. The reversal of 7145664 is 4665417.

It is not an unprimeable number, because it can be changed into a prime (7145669) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18417 + ... + 18800.

Almost surely, 2^7145664 is an apocalyptic number.

It is an amenable number.

7145664 is an abundant number, since it is smaller than the sum of its proper divisors (11761080).

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

7145664 is a wasteful number, since it uses less digits than its factorization.

7145664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37232 (or 37222 counting only the distinct ones).

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

The square root of 7145664 is about 2673.1374824352. The cubic root of 7145664 is about 192.6109014079.

The spelling of 7145664 in words is "seven million, one hundred forty-five thousand, six hundred sixty-four".