75390887 has 8 divisors (see below), whose sum is σ = 88571280. Its totient is φ = 63264960.

The previous prime is 75390881. The next prime is 75390899. The reversal of 75390887 is 78809357.

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

It is not a de Polignac number, because 75390887 - 2¹⁰ = 75389863 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 (75390881) 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, 263462 + ... + 263747.

It is an arithmetic number, because the mean of its divisors is an integer number (11071410).

Almost surely, 2^75390887 is an apocalyptic number.

75390887 is a deficient number, since it is larger than the sum of its proper divisors (13180393).

75390887 is a wasteful number, since it uses less digits than its factorization.

75390887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 527233.

The product of its (nonzero) digits is 423360, while the sum is 47.

The square root of 75390887 is about 8682.7925807312. The cubic root of 75390887 is about 422.4477010064.

The spelling of 75390887 in words is "seventy-five million, three hundred ninety thousand, eight hundred eighty-seven".