75649143 has 8 divisors (see below), whose sum is σ = 100984048. Its totient is φ = 50373504.

The previous prime is 75649121. The next prime is 75649183. The reversal of 75649143 is 34194657.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 75649143 - 2⁵ = 75649111 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 (75649103) 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 7 ways as a sum of consecutive naturals, for example, 11746 + ... + 17007.

It is an arithmetic number, because the mean of its divisors is an integer number (12623006).

Almost surely, 2^75649143 is an apocalyptic number.

75649143 is a deficient number, since it is larger than the sum of its proper divisors (25334905).

75649143 is a wasteful number, since it uses less digits than its factorization.

75649143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29633.

The product of its digits is 90720, while the sum is 39.

The square root of 75649143 is about 8697.6515795932. The cubic root of 75649143 is about 422.9295245554.

The spelling of 75649143 in words is "seventy-five million, six hundred forty-nine thousand, one hundred forty-three".