201075640 has 32 divisors (see below), whose sum is σ = 460961280. Its totient is φ = 78911872.

The previous prime is 201075629. The next prime is 201075661. The reversal of 201075640 is 46570102.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45304 + ... + 49543.

It is an arithmetic number, because the mean of its divisors is an integer number (14405040).

Almost surely, 2^201075640 is an apocalyptic number.

201075640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201075640 is an abundant number, since it is smaller than the sum of its proper divisors (259885640).

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

201075640 is a wasteful number, since it uses less digits than its factorization.

201075640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94911 (or 94907 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 201075640 is about 14180.1142449559. The cubic root of 201075640 is about 585.8500705556.

The spelling of 201075640 in words is "two hundred one million, seventy-five thousand, six hundred forty".