166826487 has 8 divisors (see below), whose sum is σ = 223767936. Its totient is φ = 110551352.

The previous prime is 166826483. The next prime is 166826497. The reversal of 166826487 is 784628661.

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 166826487 - 2² = 166826483 is a prime.

It is a super-2 number, since 2×166826487² = 55662153529522338, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166826483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 165993 + ... + 166994.

It is an arithmetic number, because the mean of its divisors is an integer number (27970992).

Almost surely, 2^166826487 is an apocalyptic number.

166826487 is a deficient number, since it is larger than the sum of its proper divisors (56941449).

166826487 is a wasteful number, since it uses less digits than its factorization.

166826487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333157.

The product of its digits is 774144, while the sum is 48.

The square root of 166826487 is about 12916.1328190755. The cubic root of 166826487 is about 550.4970569905.

The spelling of 166826487 in words is "one hundred sixty-six million, eight hundred twenty-six thousand, four hundred eighty-seven".