76217149 has 2 divisors, whose sum is σ = 76217150. Its totient is φ = 76217148.

The previous prime is 76217143. The next prime is 76217161. The reversal of 76217149 is 94171267.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 66945124 + 9272025 = 8182^2 + 3045^2 .

It is a cyclic number.

It is not a de Polignac number, because 76217149 - 2⁵ = 76217117 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (76217143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38108574 + 38108575.

It is an arithmetic number, because the mean of its divisors is an integer number (38108575).

Almost surely, 2^76217149 is an apocalyptic number.

It is an amenable number.

76217149 is a deficient number, since it is larger than the sum of its proper divisors (1).

76217149 is an equidigital number, since it uses as much as digits as its factorization.

76217149 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21168, while the sum is 37.

The square root of 76217149 is about 8730.2433528511. The cubic root of 76217149 is about 423.9853979930.

The spelling of 76217149 in words is "seventy-six million, two hundred seventeen thousand, one hundred forty-nine".