75073731 has 8 divisors (see below), whose sum is σ = 105366720. Its totient is φ = 47414952.

The previous prime is 75073729. The next prime is 75073741. The reversal of 75073731 is 13737057.

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

It is not a de Polignac number, because 75073731 - 2¹ = 75073729 is a prime.

It is a super-2 number, since 2×75073731² = 11272130172520722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 75073692 and 75073701.

It is not an unprimeable number, because it can be changed into a prime (75073741) 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, 658485 + ... + 658598.

It is an arithmetic number, because the mean of its divisors is an integer number (13170840).

Almost surely, 2^75073731 is an apocalyptic number.

75073731 is a deficient number, since it is larger than the sum of its proper divisors (30292989).

75073731 is a wasteful number, since it uses less digits than its factorization.

75073731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1317105.

The product of its (nonzero) digits is 15435, while the sum is 33.

The square root of 75073731 is about 8664.5098534193. The cubic root of 75073731 is about 421.8544810212.

The spelling of 75073731 in words is "seventy-five million, seventy-three thousand, seven hundred thirty-one".