75484681 has 2 divisors, whose sum is σ = 75484682. Its totient is φ = 75484680.

The previous prime is 75484657. The next prime is 75484697. The reversal of 75484681 is 18648457.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 68641225 + 6843456 = 8285^2 + 2616^2 .

It is an emirp because it is prime and its reverse (18648457) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 75484681 - 2¹¹ = 75482633 is a prime.

It is a super-2 number, since 2×75484681² = 11395874131343522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (75484081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37742340 + 37742341.

It is an arithmetic number, because the mean of its divisors is an integer number (37742341).

Almost surely, 2^75484681 is an apocalyptic number.

It is an amenable number.

75484681 is a deficient number, since it is larger than the sum of its proper divisors (1).

75484681 is an equidigital number, since it uses as much as digits as its factorization.

75484681 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 215040, while the sum is 43.

The square root of 75484681 is about 8688.1920443784. The cubic root of 75484681 is about 422.6228178358.

The spelling of 75484681 in words is "seventy-five million, four hundred eighty-four thousand, six hundred eighty-one".