66157054 has 8 divisors (see below), whose sum is σ = 100917720. Its totient is φ = 32517816.

The previous prime is 66157051. The next prime is 66157057. The reversal of 66157054 is 45075166.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (66157051) and next prime (66157057).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66157051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 280209 + ... + 280444.

It is an arithmetic number, because the mean of its divisors is an integer number (12614715).

Almost surely, 2^66157054 is an apocalyptic number.

66157054 is a deficient number, since it is larger than the sum of its proper divisors (34760666).

66157054 is a wasteful number, since it uses less digits than its factorization.

66157054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 560714.

The product of its (nonzero) digits is 25200, while the sum is 34.

The square root of 66157054 is about 8133.6986666584. The cubic root of 66157054 is about 404.4443001102. Note that the first 3 decimals are identical.

The spelling of 66157054 in words is "sixty-six million, one hundred fifty-seven thousand, fifty-four".