166656453 has 8 divisors (see below), whose sum is σ = 225851616. Its totient is φ = 109282800.

The previous prime is 166656449. The next prime is 166656463. The reversal of 166656453 is 354656661.

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

It is not a de Polignac number, because 166656453 - 2² = 166656449 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166656463) 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, 455163 + ... + 455528.

It is an arithmetic number, because the mean of its divisors is an integer number (28231452).

Almost surely, 2^166656453 is an apocalyptic number.

It is an amenable number.

166656453 is a deficient number, since it is larger than the sum of its proper divisors (59195163).

166656453 is an equidigital number, since it uses as much as digits as its factorization.

166656453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 910755.

The product of its digits is 388800, while the sum is 42.

The square root of 166656453 is about 12909.5489076884. The cubic root of 166656453 is about 550.3099663247.

The spelling of 166656453 in words is "one hundred sixty-six million, six hundred fifty-six thousand, four hundred fifty-three".