166710157 has 4 divisors (see below), whose sum is σ = 172087936. Its totient is φ = 161332380.

The previous prime is 166710121. The next prime is 166710169. The reversal of 166710157 is 751017661.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 166710157 - 2⁷ = 166710029 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166710107) 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, 2688843 + ... + 2688904.

It is an arithmetic number, because the mean of its divisors is an integer number (43021984).

Almost surely, 2^166710157 is an apocalyptic number.

It is an amenable number.

166710157 is a deficient number, since it is larger than the sum of its proper divisors (5377779).

166710157 is an equidigital number, since it uses as much as digits as its factorization.

166710157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5377778.

The product of its (nonzero) digits is 8820, while the sum is 34.

The square root of 166710157 is about 12911.6287508587. The cubic root of 166710157 is about 550.3690712917.

The spelling of 166710157 in words is "one hundred sixty-six million, seven hundred ten thousand, one hundred fifty-seven".