75971345 has 8 divisors (see below), whose sum is σ = 91212480. Its totient is φ = 60745840.

The previous prime is 75971309. The next prime is 75971347. The reversal of 75971345 is 54317957.

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

It is not a de Polignac number, because 75971345 - 2¹² = 75967249 is a prime.

It is a super-2 number, since 2×75971345² = 11543290522218050, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (75971347) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16286 + ... + 20424.

It is an arithmetic number, because the mean of its divisors is an integer number (11401560).

Almost surely, 2^75971345 is an apocalyptic number.

It is an amenable number.

75971345 is a deficient number, since it is larger than the sum of its proper divisors (15241135).

75971345 is a wasteful number, since it uses less digits than its factorization.

75971345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7815.

The product of its digits is 132300, while the sum is 41.

The square root of 75971345 is about 8716.1542551747. The cubic root of 75971345 is about 423.5291159769.

The spelling of 75971345 in words is "seventy-five million, nine hundred seventy-one thousand, three hundred forty-five".