166464697 has 8 divisors (see below), whose sum is σ = 201436416. Its totient is φ = 134290752.

The previous prime is 166464677. The next prime is 166464703. The reversal of 166464697 is 796464661.

166464697 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a de Polignac number, because none of the positive numbers 2^k-166464697 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 166464697.

It is not an unprimeable number, because it can be changed into a prime (166464667) 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, 699313 + ... + 699550.

It is an arithmetic number, because the mean of its divisors is an integer number (25179552).

Almost surely, 2^166464697 is an apocalyptic number.

166464697 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

166464697 is a deficient number, since it is larger than the sum of its proper divisors (34971719).

166464697 is a wasteful number, since it uses less digits than its factorization.

166464697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1398887.

The product of its digits is 1306368, while the sum is 49.

The square root of 166464697 is about 12902.1198645804. The cubic root of 166464697 is about 550.0988219124.

The spelling of 166464697 in words is "one hundred sixty-six million, four hundred sixty-four thousand, six hundred ninety-seven".