66774358 has 12 divisors (see below), whose sum is σ = 116514612. Its totient is φ = 28617540.

The previous prime is 66774353. The next prime is 66774361. The reversal of 66774358 is 85347766.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66774353) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 340588 + ... + 340783.

It is an arithmetic number, because the mean of its divisors is an integer number (9709551).

Almost surely, 2^66774358 is an apocalyptic number.

66774358 is a deficient number, since it is larger than the sum of its proper divisors (49740254).

66774358 is a wasteful number, since it uses less digits than its factorization.

66774358 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 681387 (or 681380 counting only the distinct ones).

The product of its digits is 846720, while the sum is 46.

The square root of 66774358 is about 8171.5578686074. The cubic root of 66774358 is about 405.6983490613.

The spelling of 66774358 in words is "sixty-six million, seven hundred seventy-four thousand, three hundred fifty-eight".