75408005 has 8 divisors (see below), whose sum is σ = 95812632. Its totient is φ = 56777728.

The previous prime is 75407999. The next prime is 75408013. The reversal of 75408005 is 50080457.

It can be written as a sum of positive squares in 4 ways, for example, as 11950849 + 63457156 = 3457^2 + 7966^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 75408005 - 2⁸ = 75407749 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 443492 + ... + 443661.

It is an arithmetic number, because the mean of its divisors is an integer number (11976579).

Almost surely, 2^75408005 is an apocalyptic number.

It is an amenable number.

75408005 is a deficient number, since it is larger than the sum of its proper divisors (20404627).

75408005 is a wasteful number, since it uses less digits than its factorization.

75408005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 887175.

The product of its (nonzero) digits is 5600, while the sum is 29.

The square root of 75408005 is about 8683.7782675515. The cubic root of 75408005 is about 422.4796717692.

The spelling of 75408005 in words is "seventy-five million, four hundred eight thousand, five".