166627506 has 16 divisors (see below), whose sum is σ = 352858464. Its totient is φ = 52275264.

The previous prime is 166627471. The next prime is 166627541. The reversal of 166627506 is 605726661.

166627506 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (166627471) and next prime (166627541).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 816700 + ... + 816903.

It is an arithmetic number, because the mean of its divisors is an integer number (22053654).

Almost surely, 2^166627506 is an apocalyptic number.

166627506 is an abundant number, since it is smaller than the sum of its proper divisors (186230958).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

166627506 is a wasteful number, since it uses less digits than its factorization.

166627506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1633625.

The product of its (nonzero) digits is 90720, while the sum is 39.

The square root of 166627506 is about 12908.4277121577. The cubic root of 166627506 is about 550.2781028821.

The spelling of 166627506 in words is "one hundred sixty-six million, six hundred twenty-seven thousand, five hundred six".