145676905 has 32 divisors (see below), whose sum is σ = 201535488. Its totient is φ = 100094400.

The previous prime is 145676903. The next prime is 145676911. The reversal of 145676905 is 509676541.

It is not a de Polignac number, because 145676905 - 2¹ = 145676903 is a prime.

It is a Smith number, since the sum of its digits (43) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (145676903) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 72322 + ... + 74308.

It is an arithmetic number, because the mean of its divisors is an integer number (6297984).

Almost surely, 2^145676905 is an apocalyptic number.

It is an amenable number.

145676905 is a deficient number, since it is larger than the sum of its proper divisors (55858583).

145676905 is a wasteful number, since it uses less digits than its factorization.

145676905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2077.

The product of its (nonzero) digits is 226800, while the sum is 43.

The square root of 145676905 is about 12069.6688024154. The cubic root of 145676905 is about 526.1750310246.

The spelling of 145676905 in words is "one hundred forty-five million, six hundred seventy-six thousand, nine hundred five".