75999405 has 16 divisors (see below), whose sum is σ = 121800960. Its totient is φ = 40465728.

The previous prime is 75999397. The next prime is 75999409. The reversal of 75999405 is 50499957.

It is not a de Polignac number, because 75999405 - 2³ = 75999397 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75999409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5916 + ... + 13674.

It is an arithmetic number, because the mean of its divisors is an integer number (7612560).

Almost surely, 2^75999405 is an apocalyptic number.

It is an amenable number.

75999405 is a deficient number, since it is larger than the sum of its proper divisors (45801555).

75999405 is a wasteful number, since it uses less digits than its factorization.

75999405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8420.

The product of its (nonzero) digits is 510300, while the sum is 48.

The square root of 75999405 is about 8717.7637614241. The cubic root of 75999405 is about 423.5812530213.

The spelling of 75999405 in words is "seventy-five million, nine hundred ninety-nine thousand, four hundred five".