75667481 has 4 divisors (see below), whose sum is σ = 79650000. Its totient is φ = 71684964.

The previous prime is 75667451. The next prime is 75667513. The reversal of 75667481 is 18476657.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-75667481 is a prime.

It is a super-2 number, since 2×75667481² = 11451135361770722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (75667451) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1991231 + ... + 1991268.

It is an arithmetic number, because the mean of its divisors is an integer number (19912500).

Almost surely, 2^75667481 is an apocalyptic number.

It is an amenable number.

75667481 is a deficient number, since it is larger than the sum of its proper divisors (3982519).

75667481 is a wasteful number, since it uses less digits than its factorization.

75667481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3982518.

The product of its digits is 282240, while the sum is 44.

The square root of 75667481 is about 8698.7057083224. The cubic root of 75667481 is about 422.9636957071.

The spelling of 75667481 in words is "seventy-five million, six hundred sixty-seven thousand, four hundred eighty-one".