145171684 has 12 divisors (see below), whose sum is σ = 290343424. Its totient is φ = 62216424.

The previous prime is 145171679. The next prime is 145171703. The reversal of 145171684 is 486171541.

145171684 is an admirable number.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2592324 + ... + 2592379.

Almost surely, 2^145171684 is an apocalyptic number.

145171684 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

145171684 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

145171684 is a wasteful number, since it uses less digits than its factorization.

145171684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5184714 (or 5184712 counting only the distinct ones).

The product of its digits is 26880, while the sum is 37.

The square root of 145171684 is about 12048.7212599512. The cubic root of 145171684 is about 525.5660519007.

The spelling of 145171684 in words is "one hundred forty-five million, one hundred seventy-one thousand, six hundred eighty-four".