76216447 has 2 divisors, whose sum is σ = 76216448. Its totient is φ = 76216446.

The previous prime is 76216409. The next prime is 76216451. The reversal of 76216447 is 74461267.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-76216447 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (76216477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38108223 + 38108224.

It is an arithmetic number, because the mean of its divisors is an integer number (38108224).

Almost surely, 2^76216447 is an apocalyptic number.

76216447 is a deficient number, since it is larger than the sum of its proper divisors (1).

76216447 is an equidigital number, since it uses as much as digits as its factorization.

76216447 is an evil number, because the sum of its binary digits is even.

The product of its digits is 56448, while the sum is 37.

The square root of 76216447 is about 8730.2031476936. The cubic root of 76216447 is about 423.9840962796.

The spelling of 76216447 in words is "seventy-six million, two hundred sixteen thousand, four hundred forty-seven".