145660317 has 8 divisors (see below), whose sum is σ = 211869600. Its totient is φ = 88278960.

The previous prime is 145660313. The next prime is 145660343. The reversal of 145660317 is 713066541.

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

It is not a de Polignac number, because 145660317 - 2² = 145660313 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33), and also a Moran number because the ratio is a prime number: 4413949 = 145660317 / (1 + 4 + 5 + 6 + 6 + 0 + 3 + 1 + 7).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145660313) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2206942 + ... + 2207007.

It is an arithmetic number, because the mean of its divisors is an integer number (26483700).

Almost surely, 2^145660317 is an apocalyptic number.

It is an amenable number.

145660317 is a deficient number, since it is larger than the sum of its proper divisors (66209283).

145660317 is a wasteful number, since it uses less digits than its factorization.

145660317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4413963.

The product of its (nonzero) digits is 15120, while the sum is 33.

The square root of 145660317 is about 12068.9816057528. The cubic root of 145660317 is about 526.1550586921.

The spelling of 145660317 in words is "one hundred forty-five million, six hundred sixty thousand, three hundred seventeen".