166986480 has 40 divisors (see below), whose sum is σ = 517658832. Its totient is φ = 44529664.

The previous prime is 166986451. The next prime is 166986493. The reversal of 166986480 is 84689661.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

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, 347649 + ... + 348128.

Almost surely, 2^166986480 is an apocalyptic number.

166986480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

166986480 is an abundant number, since it is smaller than the sum of its proper divisors (350672352).

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

166986480 is a wasteful number, since it uses less digits than its factorization.

166986480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 695793 (or 695787 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 48.

The square root of 166986480 is about 12922.3248682271. The cubic root of 166986480 is about 550.6729833601.

The spelling of 166986480 in words is "one hundred sixty-six million, nine hundred eighty-six thousand, four hundred eighty".