75761617 has 2 divisors, whose sum is σ = 75761618. Its totient is φ = 75761616.

The previous prime is 75761599. The next prime is 75761627. The reversal of 75761617 is 71616757.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 72607441 + 3154176 = 8521^2 + 1776^2 .

It is a cyclic number.

It is not a de Polignac number, because 75761617 - 2¹⁹ = 75237329 is a prime.

It is a super-2 number, since 2×75761617² = 11479645220909378, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 75761617.

It is not a weakly prime, because it can be changed into another prime (75761627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37880808 + 37880809.

It is an arithmetic number, because the mean of its divisors is an integer number (37880809).

Almost surely, 2^75761617 is an apocalyptic number.

It is an amenable number.

75761617 is a deficient number, since it is larger than the sum of its proper divisors (1).

75761617 is an equidigital number, since it uses as much as digits as its factorization.

75761617 is an evil number, because the sum of its binary digits is even.

The product of its digits is 61740, while the sum is 40.

The square root of 75761617 is about 8704.1149463917. The cubic root of 75761617 is about 423.1390225006.

The spelling of 75761617 in words is "seventy-five million, seven hundred sixty-one thousand, six hundred seventeen".