75681901 has 4 divisors (see below), whose sum is σ = 75699904. Its totient is φ = 75663900.

The previous prime is 75681887. The next prime is 75681911. The reversal of 75681901 is 10918657.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 75681901 - 2⁵ = 75681869 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75681911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1036 + ... + 12346.

It is an arithmetic number, because the mean of its divisors is an integer number (18924976).

Almost surely, 2^75681901 is an apocalyptic number.

It is an amenable number.

75681901 is a deficient number, since it is larger than the sum of its proper divisors (18003).

75681901 is a wasteful number, since it uses less digits than its factorization.

75681901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18002.

The product of its (nonzero) digits is 15120, while the sum is 37.

The square root of 75681901 is about 8699.5345277779. The cubic root of 75681901 is about 422.9905621540.

The spelling of 75681901 in words is "seventy-five million, six hundred eighty-one thousand, nine hundred one".