145668672 has 56 divisors (see below), whose sum is σ = 428244000. Its totient is φ = 48555648.

The previous prime is 145668661. The next prime is 145668673. The reversal of 145668672 is 276866541.

145668672 is a `hidden beast` number, since 1 + 4 + 566 + 86 + 7 + 2 = 666.

It is not an unprimeable number, because it can be changed into a prime (145668673) 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, 40422 + ... + 43877.

Almost surely, 2^145668672 is an apocalyptic number.

145668672 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

145668672 is an abundant number, since it is smaller than the sum of its proper divisors (282575328).

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

145668672 is an equidigital number, since it uses as much as digits as its factorization.

145668672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84320 (or 84304 counting only the distinct ones).

The product of its digits is 483840, while the sum is 45.

The square root of 145668672 is about 12069.3277360423. The cubic root of 145668672 is about 526.1651184933.

The spelling of 145668672 in words is "one hundred forty-five million, six hundred sixty-eight thousand, six hundred seventy-two".