145671806 has 24 divisors (see below), whose sum is σ = 257259240. Its totient is φ = 61675152.

The previous prime is 145671763. The next prime is 145671809. The reversal of 145671806 is 608176541.

It is a self number, because there is not a number n which added to its sum of digits gives 145671806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145671809) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 821 + ... + 17088.

It is an arithmetic number, because the mean of its divisors is an integer number (10719135).

Almost surely, 2^145671806 is an apocalyptic number.

145671806 is a deficient number, since it is larger than the sum of its proper divisors (111587434).

145671806 is a wasteful number, since it uses less digits than its factorization.

145671806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18008 (or 18001 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 38.

The square root of 145671806 is about 12069.4575685902. The cubic root of 145671806 is about 526.1688918730.

The spelling of 145671806 in words is "one hundred forty-five million, six hundred seventy-one thousand, eight hundred six".