7975745 has 4 divisors (see below), whose sum is σ = 9570900. Its totient is φ = 6380592.

The previous prime is 7975741. The next prime is 7975777. The reversal of 7975745 is 5475797.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3682561 + 4293184 = 1919^2 + 2072^2 .

It is a cyclic number.

It is not a de Polignac number, because 7975745 - 2² = 7975741 is a prime.

It is a super-2 number, since 2×7975745² = 127225016610050, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 7975696 and 7975705.

It is not an unprimeable number, because it can be changed into a prime (7975741) 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, 797570 + ... + 797579.

It is an arithmetic number, because the mean of its divisors is an integer number (2392725).

Almost surely, 2^7975745 is an apocalyptic number.

It is an amenable number.

7975745 is a deficient number, since it is larger than the sum of its proper divisors (1595155).

7975745 is a wasteful number, since it uses less digits than its factorization.

7975745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1595154.

The product of its digits is 308700, while the sum is 44.

The square root of 7975745 is about 2824.1361511089. The cubic root of 7975745 is about 199.7976703827.

The spelling of 7975745 in words is "seven million, nine hundred seventy-five thousand, seven hundred forty-five".