975640 has 16 divisors (see below), whose sum is σ = 2195280. Its totient is φ = 390240.

The previous prime is 975629. The next prime is 975643. The reversal of 975640 is 46579.

975640 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (975643) by changing a digit.

975640 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12156 + ... + 12235.

It is an arithmetic number, because the mean of its divisors is an integer number (137205).

2⁹⁷⁵⁶⁴⁰ is an apocalyptic number.

It is an amenable number.

975640 is an abundant number, since it is smaller than the sum of its proper divisors (1219640).

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

975640 is a wasteful number, since it uses less digits than its factorization.

975640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24402 (or 24398 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 975640 is about 987.7449063397. The cubic root of 975640 is about 99.1813158533.

The spelling of 975640 in words is "nine hundred seventy-five thousand, six hundred forty".