166676227600 has 135 divisors (see below), whose sum is σ = 406109333077. Its totient is φ = 65739658240.

The previous prime is 166676227573. The next prime is 166676227603. The reversal of 166676227600 is 6722676661.

The square root of 166676227600 is 408260.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 13 ways, for example, as 152558985744 + 14117241856 = 390588^2 + 118816^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (166676227603) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 1118632326 + ... + 1118632474.

Almost surely, 2^166676227600 is an apocalyptic number.

166676227600 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

166676227600 is the 408260-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 166676227600

166676227600 is an abundant number, since it is smaller than the sum of its proper divisors (239433105477).

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

166676227600 is an equidigital number, since it uses as much as digits as its factorization.

166676227600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 590 (or 293 counting only the distinct ones).

The product of its (nonzero) digits is 1524096, while the sum is 49.

Multiplying 166676227600 by its sum of digits (49), we get a square (8167135152400 = 2857820²).

The spelling of 166676227600 in words is "one hundred sixty-six billion, six hundred seventy-six million, two hundred twenty-seven thousand, six hundred".