145679217 has 16 divisors (see below), whose sum is σ = 203292288. Its totient is φ = 92618240.

The previous prime is 145679207. The next prime is 145679279. The reversal of 145679217 is 712976541.

It is a happy number.

It is not a de Polignac number, because 145679217 - 2¹⁶ = 145613681 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (145679207) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21367 + ... + 27347.

It is an arithmetic number, because the mean of its divisors is an integer number (12705768).

Almost surely, 2^145679217 is an apocalyptic number.

It is an amenable number.

145679217 is a deficient number, since it is larger than the sum of its proper divisors (57613071).

145679217 is a wasteful number, since it uses less digits than its factorization.

145679217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6360.

The product of its digits is 105840, while the sum is 42.

The square root of 145679217 is about 12069.7645793114. The cubic root of 145679217 is about 526.1778146052.

The spelling of 145679217 in words is "one hundred forty-five million, six hundred seventy-nine thousand, two hundred seventeen".