7975975 has 36 divisors (see below), whose sum is σ = 12213504. Its totient is φ = 5134080.

The previous prime is 7975973. The next prime is 7975987. The reversal of 7975975 is 5795797.

7975975 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 7975975 - 2¹ = 7975973 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a Duffinian number.

7975975 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7975973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 20634 + ... + 21016.

It is an arithmetic number, because the mean of its divisors is an integer number (339264).

Almost surely, 2^7975975 is an apocalyptic number.

7975975 is a deficient number, since it is larger than the sum of its proper divisors (4237529).

7975975 is a wasteful number, since it uses less digits than its factorization.

7975975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 424 (or 412 counting only the distinct ones).

The product of its digits is 694575, while the sum is 49.

The square root of 7975975 is about 2824.1768712317. The cubic root of 7975975 is about 199.7995909147.

The spelling of 7975975 in words is "seven million, nine hundred seventy-five thousand, nine hundred seventy-five".