166520536 has 32 divisors (see below), whose sum is σ = 384279840. Its totient is φ = 65875968.

The previous prime is 166520531. The next prime is 166520539. The reversal of 166520536 is 635025661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166520531) 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, 113641 + ... + 115096.

It is an arithmetic number, because the mean of its divisors is an integer number (12008745).

Almost surely, 2^166520536 is an apocalyptic number.

It is an amenable number.

166520536 is an abundant number, since it is smaller than the sum of its proper divisors (217759304).

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

166520536 is a wasteful number, since it uses less digits than its factorization.

166520536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228763 (or 228759 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 34.

The square root of 166520536 is about 12904.2836298649. The cubic root of 166520536 is about 550.1603235095.

It can be divided in two parts, 1665 and 20536, that added together give a square (22201 = 149²).

The spelling of 166520536 in words is "one hundred sixty-six million, five hundred twenty thousand, five hundred thirty-six".