74886157 has 2 divisors, whose sum is σ = 74886158. Its totient is φ = 74886156.

The previous prime is 74886151. The next prime is 74886179. The reversal of 74886157 is 75168847.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 39614436 + 35271721 = 6294^2 + 5939^2 .

It is a cyclic number.

It is not a de Polignac number, because 74886157 - 2¹¹ = 74884109 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74886151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37443078 + 37443079.

It is an arithmetic number, because the mean of its divisors is an integer number (37443079).

Almost surely, 2^74886157 is an apocalyptic number.

It is an amenable number.

74886157 is a deficient number, since it is larger than the sum of its proper divisors (1).

74886157 is an equidigital number, since it uses as much as digits as its factorization.

74886157 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 376320, while the sum is 46.

The square root of 74886157 is about 8653.6788130829. The cubic root of 74886157 is about 421.5028492542.

The spelling of 74886157 in words is "seventy-four million, eight hundred eighty-six thousand, one hundred fifty-seven".