166072470 has 16 divisors (see below), whose sum is σ = 398574000. Its totient is φ = 44285984.

The previous prime is 166072469. The next prime is 166072477. The reversal of 166072470 is 74270661.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166072477) 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, 2767845 + ... + 2767904.

It is an arithmetic number, because the mean of its divisors is an integer number (24910875).

Almost surely, 2^166072470 is an apocalyptic number.

166072470 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

166072470 is an abundant number, since it is smaller than the sum of its proper divisors (232501530).

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

166072470 is a wasteful number, since it uses less digits than its factorization.

166072470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5535759.

The product of its (nonzero) digits is 14112, while the sum is 33.

The square root of 166072470 is about 12886.9108012743. The cubic root of 166072470 is about 549.6664313442. Note that the first 3 decimals are identical.

The spelling of 166072470 in words is "one hundred sixty-six million, seventy-two thousand, four hundred seventy".