75660481 has 4 divisors (see below), whose sum is σ = 81480532. Its totient is φ = 69840432.

The previous prime is 75660461. The next prime is 75660509. The reversal of 75660481 is 18406657.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 18406657 = 47 ⋅391631.

It can be written as a sum of positive squares in 2 ways, for example, as 26884225 + 48776256 = 5185^2 + 6984^2 .

It is a cyclic number.

It is not a de Polignac number, because 75660481 - 2¹¹ = 75658433 is a prime.

It is a super-2 number, since 2×75660481² = 11449016770302722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 75660481.

It is not an unprimeable number, because it can be changed into a prime (75660461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2910006 + ... + 2910031.

It is an arithmetic number, because the mean of its divisors is an integer number (20370133).

Almost surely, 2^75660481 is an apocalyptic number.

It is an amenable number.

75660481 is a deficient number, since it is larger than the sum of its proper divisors (5820051).

75660481 is a wasteful number, since it uses less digits than its factorization.

75660481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5820050.

The product of its (nonzero) digits is 40320, while the sum is 37.

The square root of 75660481 is about 8698.3033403072. The cubic root of 75660481 is about 422.9506525119.

The spelling of 75660481 in words is "seventy-five million, six hundred sixty thousand, four hundred eighty-one".