145685215 has 8 divisors (see below), whose sum is σ = 188270208. Its totient is φ = 107582880.

The previous prime is 145685209. The next prime is 145685227. The reversal of 145685215 is 512586541.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 145685215 - 2³ = 145685207 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1120591 + ... + 1120720.

It is an arithmetic number, because the mean of its divisors is an integer number (23533776).

Almost surely, 2^145685215 is an apocalyptic number.

145685215 is a deficient number, since it is larger than the sum of its proper divisors (42584993).

145685215 is a wasteful number, since it uses less digits than its factorization.

145685215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2241329.

The product of its digits is 48000, while the sum is 37.

The square root of 145685215 is about 12070.0130488745. The cubic root of 145685215 is about 526.1850358851.

The spelling of 145685215 in words is "one hundred forty-five million, six hundred eighty-five thousand, two hundred fifteen".