166144620 has 24 divisors (see below), whose sum is σ = 465205104. Its totient is φ = 44305216.

The previous prime is 166144613. The next prime is 166144633. The reversal of 166144620 is 26441661.

It is a Harshad number since it is a multiple of its sum of digits (30).

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, 1384479 + ... + 1384598.

It is an arithmetic number, because the mean of its divisors is an integer number (19383546).

Almost surely, 2^166144620 is an apocalyptic number.

166144620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

166144620 is an abundant number, since it is smaller than the sum of its proper divisors (299060484).

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

166144620 is a wasteful number, since it uses less digits than its factorization.

166144620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2769089 (or 2769087 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 166144620 is about 12889.7098493333. The cubic root of 166144620 is about 549.7460204762.

The spelling of 166144620 in words is "one hundred sixty-six million, one hundred forty-four thousand, six hundred twenty".