75919013 has 4 divisors (see below), whose sum is σ = 78536940. Its totient is φ = 73301088.

The previous prime is 75919007. The next prime is 75919027. The reversal of 75919013 is 31091957.

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 52085089 + 23833924 = 7217^2 + 4882^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-75919013 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 (75919033) 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 3 ways as a sum of consecutive naturals, for example, 1308920 + ... + 1308977.

It is an arithmetic number, because the mean of its divisors is an integer number (19634235).

Almost surely, 2^75919013 is an apocalyptic number.

It is an amenable number.

75919013 is a deficient number, since it is larger than the sum of its proper divisors (2617927).

75919013 is a wasteful number, since it uses less digits than its factorization.

75919013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2617926.

The product of its (nonzero) digits is 8505, while the sum is 35.

The square root of 75919013 is about 8713.1517259830. The cubic root of 75919013 is about 423.4318458952.

The spelling of 75919013 in words is "seventy-five million, nine hundred nineteen thousand, thirteen".