7003945 has 16 divisors (see below), whose sum is σ = 9107280. Its totient is φ = 5140224.

The previous prime is 7003943. The next prime is 7003957. The reversal of 7003945 is 5493007.

It can be written as a sum of positive squares in 8 ways, for example, as 2128681 + 4875264 = 1459^2 + 2208^2 .

It is a cyclic number.

It is not a de Polignac number, because 7003945 - 2¹ = 7003943 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7003943) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17811 + ... + 18199.

It is an arithmetic number, because the mean of its divisors is an integer number (569205).

Almost surely, 2^7003945 is an apocalyptic number.

It is an amenable number.

7003945 is a deficient number, since it is larger than the sum of its proper divisors (2103335).

7003945 is a wasteful number, since it uses less digits than its factorization.

7003945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 684.

The product of its (nonzero) digits is 3780, while the sum is 28.

The square root of 7003945 is about 2646.4967409766. The cubic root of 7003945 is about 191.3290473072.

The spelling of 7003945 in words is "seven million, three thousand, nine hundred forty-five".