74886857 has 2 divisors, whose sum is σ = 74886858. Its totient is φ = 74886856.

The previous prime is 74886821. The next prime is 74886863. The reversal of 74886857 is 75868847.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 72403081 + 2483776 = 8509^2 + 1576^2 .

It is an emirp because it is prime and its reverse (75868847) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 74886857 - 2¹² = 74882761 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 74886799 and 74886808.

It is not a weakly prime, because it can be changed into another prime (74886157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37443428 + 37443429.

It is an arithmetic number, because the mean of its divisors is an integer number (37443429).

Almost surely, 2^74886857 is an apocalyptic number.

It is an amenable number.

74886857 is a deficient number, since it is larger than the sum of its proper divisors (1).

74886857 is an equidigital number, since it uses as much as digits as its factorization.

74886857 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3010560, while the sum is 53.

The square root of 74886857 is about 8653.7192582149. The cubic root of 74886857 is about 421.5041625858.

The spelling of 74886857 in words is "seventy-four million, eight hundred eighty-six thousand, eight hundred fifty-seven".