166370540 has 24 divisors (see below), whose sum is σ = 399289632. Its totient is φ = 57041280.

The previous prime is 166370539. The next prime is 166370543. The reversal of 166370540 is 45073661.

It is a junction number, because it is equal to n+sod(n) for n = 166370497 and 166370506.

It is not an unprimeable number, because it can be changed into a prime (166370543) 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, 594041 + ... + 594320.

It is an arithmetic number, because the mean of its divisors is an integer number (16637068).

Almost surely, 2^166370540 is an apocalyptic number.

166370540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

166370540 is an abundant number, since it is smaller than the sum of its proper divisors (232919092).

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

166370540 is a wasteful number, since it uses less digits than its factorization.

166370540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1188377 (or 1188375 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 32.

The square root of 166370540 is about 12898.4704519567. The cubic root of 166370540 is about 549.9950853555.

The spelling of 166370540 in words is "one hundred sixty-six million, three hundred seventy thousand, five hundred forty".