76881247 has 2 divisors, whose sum is σ = 76881248. Its totient is φ = 76881246.

The previous prime is 76881241. The next prime is 76881263. The reversal of 76881247 is 74218867.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 76881247 - 2¹¹ = 76879199 is a prime.

It is a super-2 number, since 2×76881247² = 11821452280550018, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (76881241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38440623 + 38440624.

It is an arithmetic number, because the mean of its divisors is an integer number (38440624).

Almost surely, 2^76881247 is an apocalyptic number.

76881247 is a deficient number, since it is larger than the sum of its proper divisors (1).

76881247 is an equidigital number, since it uses as much as digits as its factorization.

76881247 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 150528, while the sum is 43.

The square root of 76881247 is about 8768.1951962761. The cubic root of 76881247 is about 425.2132668969.

The spelling of 76881247 in words is "seventy-six million, eight hundred eighty-one thousand, two hundred forty-seven".