75642313 has 4 divisors (see below), whose sum is σ = 76311828. Its totient is φ = 74972800.

The previous prime is 75642311. The next prime is 75642373. The reversal of 75642313 is 31324657.

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 12089529 + 63552784 = 3477^2 + 7972^2 .

It is a cyclic number.

It is not a de Polignac number, because 75642313 - 2¹ = 75642311 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (75642311) 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, 334588 + ... + 334813.

It is an arithmetic number, because the mean of its divisors is an integer number (19077957).

Almost surely, 2^75642313 is an apocalyptic number.

It is an amenable number.

75642313 is a deficient number, since it is larger than the sum of its proper divisors (669515).

75642313 is a wasteful number, since it uses less digits than its factorization.

75642313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 669514.

The product of its digits is 15120, while the sum is 31.

The square root of 75642313 is about 8697.2589360097. The cubic root of 75642313 is about 422.9167960763.

The spelling of 75642313 in words is "seventy-five million, six hundred forty-two thousand, three hundred thirteen".