75618973 has 4 divisors (see below), whose sum is σ = 75727548. Its totient is φ = 75510400.

The previous prime is 75618967. The next prime is 75618989. The reversal of 75618973 is 37981657.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 37981657 = 7 ⋅5425951.

It can be written as a sum of positive squares in 2 ways, for example, as 71284249 + 4334724 = 8443^2 + 2082^2 .

It is a cyclic number.

It is not a de Polignac number, because 75618973 - 2¹⁷ = 75487901 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 (75618913) 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, 53236 + ... + 54637.

It is an arithmetic number, because the mean of its divisors is an integer number (18931887).

Almost surely, 2^75618973 is an apocalyptic number.

It is an amenable number.

75618973 is a deficient number, since it is larger than the sum of its proper divisors (108575).

75618973 is a wasteful number, since it uses less digits than its factorization.

75618973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108574.

The product of its digits is 317520, while the sum is 46.

The square root of 75618973 is about 8695.9170304230. The cubic root of 75618973 is about 422.8732935575.

The spelling of 75618973 in words is "seventy-five million, six hundred eighteen thousand, nine hundred seventy-three".