75469991 has 8 divisors (see below), whose sum is σ = 76540464. Its totient is φ = 74403520.

The previous prime is 75469981. The next prime is 75469997. The reversal of 75469991 is 19996457.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-75469991 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 (75469997) 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, 70601 + ... + 71661.

It is an arithmetic number, because the mean of its divisors is an integer number (9567558).

Almost surely, 2^75469991 is an apocalyptic number.

75469991 is a deficient number, since it is larger than the sum of its proper divisors (1070473).

75469991 is a wasteful number, since it uses less digits than its factorization.

75469991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2001.

The product of its digits is 612360, while the sum is 50.

The square root of 75469991 is about 8687.3466029623. The cubic root of 75469991 is about 422.5954006526.

The spelling of 75469991 in words is "seventy-five million, four hundred sixty-nine thousand, nine hundred ninety-one".