75764149 has 2 divisors, whose sum is σ = 75764150. Its totient is φ = 75764148.

The previous prime is 75764147. The next prime is 75764159. The reversal of 75764149 is 94146757.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 39463524 + 36300625 = 6282^2 + 6025^2 .

It is a cyclic number.

It is not a de Polignac number, because 75764149 - 2¹ = 75764147 is a prime.

Together with 75764147, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (75764147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37882074 + 37882075.

It is an arithmetic number, because the mean of its divisors is an integer number (37882075).

Almost surely, 2^75764149 is an apocalyptic number.

It is an amenable number.

75764149 is a deficient number, since it is larger than the sum of its proper divisors (1).

75764149 is an equidigital number, since it uses as much as digits as its factorization.

75764149 is an evil number, because the sum of its binary digits is even.

The product of its digits is 211680, while the sum is 43.

The square root of 75764149 is about 8704.2603936233. The cubic root of 75764149 is about 423.1437363038.

The spelling of 75764149 in words is "seventy-five million, seven hundred sixty-four thousand, one hundred forty-nine".