75464993 has 4 divisors (see below), whose sum is σ = 75483540. Its totient is φ = 75446448.

The previous prime is 75464971. The next prime is 75465029. The reversal of 75464993 is 39946457.

It is a happy number.

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 70677649 + 4787344 = 8407^2 + 2188^2 .

It is a cyclic number.

It is not a de Polignac number, because 75464993 - 2²⁰ = 74416417 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (75464393) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 230 + ... + 12287.

It is an arithmetic number, because the mean of its divisors is an integer number (18870885).

Almost surely, 2^75464993 is an apocalyptic number.

It is an amenable number.

75464993 is a deficient number, since it is larger than the sum of its proper divisors (18547).

75464993 is a wasteful number, since it uses less digits than its factorization.

75464993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18546.

The product of its digits is 816480, while the sum is 47.

The square root of 75464993 is about 8687.0589384440. The cubic root of 75464993 is about 422.5860716535.

The spelling of 75464993 in words is "seventy-five million, four hundred sixty-four thousand, nine hundred ninety-three".