145681307 has 8 divisors (see below), whose sum is σ = 150558720. Its totient is φ = 140815080.

The previous prime is 145681271. The next prime is 145681337. The reversal of 145681307 is 703186541.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-145681307 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145681337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29948 + ... + 34470.

It is an arithmetic number, because the mean of its divisors is an integer number (18819840).

Almost surely, 2^145681307 is an apocalyptic number.

145681307 is a deficient number, since it is larger than the sum of its proper divisors (4877413).

145681307 is a wasteful number, since it uses less digits than its factorization.

145681307 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5593.

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 145681307 is about 12069.8511589829. The cubic root of 145681307 is about 526.1803308790.

The spelling of 145681307 in words is "one hundred forty-five million, six hundred eighty-one thousand, three hundred seven".