75074991 has 8 divisors (see below), whose sum is σ = 100772400. Its totient is φ = 49713792.

The previous prime is 75074969. The next prime is 75075001. The reversal of 75074991 is 19947057.

It is a happy number.

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

It is not a de Polignac number, because 75074991 - 2⁷ = 75074863 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75073991) 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, 83530 + ... + 84423.

It is an arithmetic number, because the mean of its divisors is an integer number (12596550).

Almost surely, 2^75074991 is an apocalyptic number.

75074991 is a deficient number, since it is larger than the sum of its proper divisors (25697409).

75074991 is a wasteful number, since it uses less digits than its factorization.

75074991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168105.

The product of its (nonzero) digits is 79380, while the sum is 42.

The square root of 75074991 is about 8664.5825635168. The cubic root of 75074991 is about 421.8568410730.

The spelling of 75074991 in words is "seventy-five million, seventy-four thousand, nine hundred ninety-one".