166616241 has 8 divisors (see below), whose sum is σ = 242350944. Its totient is φ = 100979520.

The previous prime is 166616237. The next prime is 166616273. The reversal of 166616241 is 142616661.

It is a happy number.

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

It is not a de Polignac number, because 166616241 - 2² = 166616237 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33), and also a Moran number because the ratio is a prime number: 5048977 = 166616241 / (1 + 6 + 6 + 6 + 1 + 6 + 2 + 4 + 1).

It is not an unprimeable number, because it can be changed into a prime (166616231) 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, 2524456 + ... + 2524521.

It is an arithmetic number, because the mean of its divisors is an integer number (30293868).

Almost surely, 2^166616241 is an apocalyptic number.

166616241 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

166616241 is a deficient number, since it is larger than the sum of its proper divisors (75734703).

166616241 is a wasteful number, since it uses less digits than its factorization.

166616241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5048991.

The product of its digits is 10368, while the sum is 33.

The square root of 166616241 is about 12907.9913619432. The cubic root of 166616241 is about 550.2657019232.

The spelling of 166616241 in words is "one hundred sixty-six million, six hundred sixteen thousand, two hundred forty-one".