145641686 has 16 divisors (see below), whose sum is σ = 233009136. Its totient is φ = 68034816.

The previous prime is 145641653. The next prime is 145641701. The reversal of 145641686 is 686146541.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10976 + ... + 20291.

It is an arithmetic number, because the mean of its divisors is an integer number (14563071).

Almost surely, 2^145641686 is an apocalyptic number.

145641686 is a deficient number, since it is larger than the sum of its proper divisors (87367450).

145641686 is a wasteful number, since it uses less digits than its factorization.

145641686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31423.

The product of its digits is 138240, while the sum is 41.

The square root of 145641686 is about 12068.2097263844. The cubic root of 145641686 is about 526.1326247328.

The spelling of 145641686 in words is "one hundred forty-five million, six hundred forty-one thousand, six hundred eighty-six".