76618481 has 2 divisors, whose sum is σ = 76618482. Its totient is φ = 76618480.

The previous prime is 76618459. The next prime is 76618489. The reversal of 76618481 is 18481667.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 63361600 + 13256881 = 7960^2 + 3641^2 .

It is an emirp because it is prime and its reverse (18481667) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-76618481 is a prime.

It is a super-2 number, since 2×76618481² = 11740783261494722, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (76618489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38309240 + 38309241.

It is an arithmetic number, because the mean of its divisors is an integer number (38309241).

Almost surely, 2^76618481 is an apocalyptic number.

It is an amenable number.

76618481 is a deficient number, since it is larger than the sum of its proper divisors (1).

76618481 is an equidigital number, since it uses as much as digits as its factorization.

76618481 is an evil number, because the sum of its binary digits is even.

The product of its digits is 64512, while the sum is 41.

The square root of 76618481 is about 8753.1983297535. The cubic root of 76618481 is about 424.7282802949.

The spelling of 76618481 in words is "seventy-six million, six hundred eighteen thousand, four hundred eighty-one".