66790158 has 8 divisors (see below), whose sum is σ = 133580328. Its totient is φ = 22263384.

The previous prime is 66790153. The next prime is 66790193. The reversal of 66790158 is 85109766.

It is a sphenic number, since it is the product of 3 distinct primes.

66790158 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66790153) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5565841 + ... + 5565852.

It is an arithmetic number, because the mean of its divisors is an integer number (16697541).

Almost surely, 2^66790158 is an apocalyptic number.

66790158 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66790158 is a wasteful number, since it uses less digits than its factorization.

66790158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11131698.

The product of its (nonzero) digits is 90720, while the sum is 42.

The square root of 66790158 is about 8172.5245793451. The cubic root of 66790158 is about 405.7303450181.

The spelling of 66790158 in words is "sixty-six million, seven hundred ninety thousand, one hundred fifty-eight".