7144945 has 8 divisors (see below), whose sum is σ = 8612136. Its totient is φ = 5690496.

The previous prime is 7144903. The next prime is 7144967. The reversal of 7144945 is 5494417.

It can be written as a sum of positive squares in 4 ways, for example, as 1442401 + 5702544 = 1201^2 + 2388^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 7144945 - 2⁹ = 7144433 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 7144945.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1902 + ... + 4231.

It is an arithmetic number, because the mean of its divisors is an integer number (1076517).

Almost surely, 2^7144945 is an apocalyptic number.

It is an amenable number.

7144945 is a deficient number, since it is larger than the sum of its proper divisors (1467191).

7144945 is a wasteful number, since it uses less digits than its factorization.

7144945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6371.

The product of its digits is 20160, while the sum is 34.

The square root of 7144945 is about 2673.0029928902. The cubic root of 7144945 is about 192.6044409921.

The spelling of 7144945 in words is "seven million, one hundred forty-four thousand, nine hundred forty-five".