157727666 has 8 divisors (see below), whose sum is σ = 250508700. Its totient is φ = 74224768.

The previous prime is 157727657. The next prime is 157727671. The reversal of 157727666 is 666727751.

157727666 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 155725441 + 2002225 = 12479^2 + 1415^2 .

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

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 157727666.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2319491 + ... + 2319558.

Almost surely, 2^157727666 is an apocalyptic number.

157727666 is a deficient number, since it is larger than the sum of its proper divisors (92781034).

157727666 is a wasteful number, since it uses less digits than its factorization.

157727666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4639068.

The product of its digits is 740880, while the sum is 47.

The square root of 157727666 is about 12558.9675531072. The cubic root of 157727666 is about 540.3012333920.

The spelling of 157727666 in words is "one hundred fifty-seven million, seven hundred twenty-seven thousand, six hundred sixty-six".