166335013 has 8 divisors (see below), whose sum is σ = 179418456. Its totient is φ = 153292800.

The previous prime is 166335007. The next prime is 166335019. The reversal of 166335013 is 310533661.

It is an interprime number because it is at equal distance from previous prime (166335007) and next prime (166335019).

It can be written as a sum of positive squares in 4 ways, for example, as 67272804 + 99062209 = 8202^2 + 9953^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 166335013 - 2¹⁷ = 166203941 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 (166335019) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1648 + ... + 18313.

It is an arithmetic number, because the mean of its divisors is an integer number (22427307).

Almost surely, 2^166335013 is an apocalyptic number.

166335013 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

166335013 is a deficient number, since it is larger than the sum of its proper divisors (13083443).

166335013 is a wasteful number, since it uses less digits than its factorization.

166335013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20615.

The product of its (nonzero) digits is 4860, while the sum is 28.

The square root of 166335013 is about 12897.0931996322. The cubic root of 166335013 is about 549.9559336596.

Adding to 166335013 its reverse (310533661), we get a palindrome (476868674).

The spelling of 166335013 in words is "one hundred sixty-six million, three hundred thirty-five thousand, thirteen".