75777697 has 2 divisors, whose sum is σ = 75777698. Its totient is φ = 75777696.

The previous prime is 75777683. The next prime is 75777707. The reversal of 75777697 is 79677757.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 69622336 + 6155361 = 8344^2 + 2481^2 .

It is a cyclic number.

It is not a de Polignac number, because 75777697 - 2¹¹ = 75775649 is a prime.

It is not a weakly prime, because it can be changed into another prime (75774697) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37888848 + 37888849.

It is an arithmetic number, because the mean of its divisors is an integer number (37888849).

Almost surely, 2^75777697 is an apocalyptic number.

It is an amenable number.

75777697 is a deficient number, since it is larger than the sum of its proper divisors (1).

75777697 is an equidigital number, since it uses as much as digits as its factorization.

75777697 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4537890, while the sum is 55.

The square root of 75777697 is about 8705.0385984210. The cubic root of 75777697 is about 423.1689567181.

The spelling of 75777697 in words is "seventy-five million, seven hundred seventy-seven thousand, six hundred ninety-seven".