76842947 has 2 divisors, whose sum is σ = 76842948. Its totient is φ = 76842946.

The previous prime is 76842911. The next prime is 76842949. The reversal of 76842947 is 74924867.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 76842947 - 2²² = 72648643 is a prime.

Together with 76842949, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (76842949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38421473 + 38421474.

It is an arithmetic number, because the mean of its divisors is an integer number (38421474).

Almost surely, 2^76842947 is an apocalyptic number.

76842947 is a deficient number, since it is larger than the sum of its proper divisors (1).

76842947 is an equidigital number, since it uses as much as digits as its factorization.

76842947 is an evil number, because the sum of its binary digits is even.

The product of its digits is 677376, while the sum is 47.

The square root of 76842947 is about 8766.0108943578. The cubic root of 76842947 is about 425.1426455432.

The spelling of 76842947 in words is "seventy-six million, eight hundred forty-two thousand, nine hundred forty-seven".