145673668 has 36 divisors (see below), whose sum is σ = 298739280. Its totient is φ = 61970832.

The previous prime is 145673659. The next prime is 145673701. The reversal of 145673668 is 866376541.

145673668 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24571 + ... + 29917.

Almost surely, 2^145673668 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 145673668, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (149369640).

145673668 is an abundant number, since it is smaller than the sum of its proper divisors (153065612).

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

145673668 is a wasteful number, since it uses less digits than its factorization.

145673668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5504 (or 5495 counting only the distinct ones).

The product of its digits is 725760, while the sum is 46.

The square root of 145673668 is about 12069.5347051989. The cubic root of 145673668 is about 526.1711337214.

The spelling of 145673668 in words is "one hundred forty-five million, six hundred seventy-three thousand, six hundred sixty-eight".