76681147 has 2 divisors, whose sum is σ = 76681148. Its totient is φ = 76681146.

The previous prime is 76681141. The next prime is 76681153. The reversal of 76681147 is 74118667.

It is a balanced prime because it is at equal distance from previous prime (76681141) and next prime (76681153).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-76681147 is a prime.

It is not a weakly prime, because it can be changed into another prime (76681141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38340573 + 38340574.

It is an arithmetic number, because the mean of its divisors is an integer number (38340574).

Almost surely, 2^76681147 is an apocalyptic number.

76681147 is a deficient number, since it is larger than the sum of its proper divisors (1).

76681147 is an equidigital number, since it uses as much as digits as its factorization.

76681147 is an evil number, because the sum of its binary digits is even.

The product of its digits is 56448, while the sum is 40.

The square root of 76681147 is about 8756.7772039718. Note that the first 3 decimals coincide. The cubic root of 76681147 is about 424.8440433543.

The spelling of 76681147 in words is "seventy-six million, six hundred eighty-one thousand, one hundred forty-seven".