66157562 has 8 divisors (see below), whose sum is σ = 99271776. Its totient is φ = 33066972.

The previous prime is 66157547. The next prime is 66157571. The reversal of 66157562 is 26575166.

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

It is an unprimeable number.

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, 5513 + ... + 12755.

It is an arithmetic number, because the mean of its divisors is an integer number (12408972).

Almost surely, 2^66157562 is an apocalyptic number.

66157562 is a deficient number, since it is larger than the sum of its proper divisors (33114214).

66157562 is a wasteful number, since it uses less digits than its factorization.

66157562 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11812.

The product of its digits is 75600, while the sum is 38.

The square root of 66157562 is about 8133.7298947039. The cubic root of 66157562 is about 404.4453353093.

The spelling of 66157562 in words is "sixty-six million, one hundred fifty-seven thousand, five hundred sixty-two".