76774849 has 2 divisors, whose sum is σ = 76774850. Its totient is φ = 76774848.

The previous prime is 76774739. The next prime is 76774883. The reversal of 76774849 is 94847767.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 76737600 + 37249 = 8760^2 + 193^2 .

It is a cyclic number.

It is not a de Polignac number, because 76774849 - 2⁷ = 76774721 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 76774796 and 76774805.

It is not a weakly prime, because it can be changed into another prime (76774349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38387424 + 38387425.

It is an arithmetic number, because the mean of its divisors is an integer number (38387425).

Almost surely, 2^76774849 is an apocalyptic number.

It is an amenable number.

76774849 is a deficient number, since it is larger than the sum of its proper divisors (1).

76774849 is an equidigital number, since it uses as much as digits as its factorization.

76774849 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2370816, while the sum is 52.

The square root of 76774849 is about 8762.1258265332. The cubic root of 76774849 is about 425.0170216943.

The spelling of 76774849 in words is "seventy-six million, seven hundred seventy-four thousand, eight hundred forty-nine".