75731965 has 8 divisors (see below), whose sum is σ = 92593368. Its totient is φ = 59442240.

The previous prime is 75731959. The next prime is 75732011. The reversal of 75731965 is 56913757.

It can be written as a sum of positive squares in 4 ways, for example, as 37613689 + 38118276 = 6133^2 + 6174^2 .

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

It is not a de Polignac number, because 75731965 - 2⁷ = 75731837 is a prime.

It is a super-2 number, since 2×75731965² = 11470661045522450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 142626 + ... + 143155.

It is an arithmetic number, because the mean of its divisors is an integer number (11574171).

Almost surely, 2^75731965 is an apocalyptic number.

It is an amenable number.

75731965 is a deficient number, since it is larger than the sum of its proper divisors (16861403).

75731965 is a wasteful number, since it uses less digits than its factorization.

75731965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285839.

The product of its digits is 198450, while the sum is 43.

The square root of 75731965 is about 8702.4114474093. The cubic root of 75731965 is about 423.0838118014.

The spelling of 75731965 in words is "seventy-five million, seven hundred thirty-one thousand, nine hundred sixty-five".