76667849 has 2 divisors, whose sum is σ = 76667850. Its totient is φ = 76667848.

The previous prime is 76667819. The next prime is 76667861. The reversal of 76667849 is 94876667.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 44462224 + 32205625 = 6668^2 + 5675^2 .

It is an emirp because it is prime and its reverse (94876667) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 76667849 - 2²⁰ = 75619273 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 76667849.

It is not a weakly prime, because it can be changed into another prime (76667819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38333924 + 38333925.

It is an arithmetic number, because the mean of its divisors is an integer number (38333925).

Almost surely, 2^76667849 is an apocalyptic number.

It is an amenable number.

76667849 is a deficient number, since it is larger than the sum of its proper divisors (1).

76667849 is an equidigital number, since it uses as much as digits as its factorization.

76667849 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3048192, while the sum is 53.

The square root of 76667849 is about 8756.0178734400. The cubic root of 76667849 is about 424.8194831988.

The spelling of 76667849 in words is "seventy-six million, six hundred sixty-seven thousand, eight hundred forty-nine".