75408861 has 16 divisors (see below), whose sum is σ = 110246400. Its totient is φ = 45468720.

The previous prime is 75408857. The next prime is 75408869. The reversal of 75408861 is 16880457.

It is not a de Polignac number, because 75408861 - 2² = 75408857 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75408869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 826 + ... + 12308.

It is an arithmetic number, because the mean of its divisors is an integer number (6890400).

Almost surely, 2^75408861 is an apocalyptic number.

It is an amenable number.

75408861 is a deficient number, since it is larger than the sum of its proper divisors (34837539).

75408861 is a wasteful number, since it uses less digits than its factorization.

75408861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11696.

The product of its (nonzero) digits is 53760, while the sum is 39.

The square root of 75408861 is about 8683.8275547134. The cubic root of 75408861 is about 422.4812703670.

The spelling of 75408861 in words is "seventy-five million, four hundred eight thousand, eight hundred sixty-one".