166557460 has 24 divisors (see below), whose sum is σ = 350158536. Its totient is φ = 66549120.

The previous prime is 166557437. The next prime is 166557463. The reversal of 166557460 is 64755661.

It can be written as a sum of positive squares in 4 ways, for example, as 8099716 + 158457744 = 2846^2 + 12588^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166557463) 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, 16150 + ... + 24370.

It is an arithmetic number, because the mean of its divisors is an integer number (14589939).

Almost surely, 2^166557460 is an apocalyptic number.

166557460 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

166557460 is an abundant number, since it is smaller than the sum of its proper divisors (183601076).

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

166557460 is a wasteful number, since it uses less digits than its factorization.

166557460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9243 (or 9241 counting only the distinct ones).

The product of its (nonzero) digits is 151200, while the sum is 40.

The square root of 166557460 is about 12905.7142382745. The cubic root of 166557460 is about 550.2009843973.

The spelling of 166557460 in words is "one hundred sixty-six million, five hundred fifty-seven thousand, four hundred sixty".