145985686 has 16 divisors (see below), whose sum is σ = 273012480. Its totient is φ = 56877480.

The previous prime is 145985663. The next prime is 145985687. The reversal of 145985686 is 686589541.

It is a super-3 number, since 3×145985686³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145985687) 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, 473826 + ... + 474133.

It is an arithmetic number, because the mean of its divisors is an integer number (17063280).

Almost surely, 2^145985686 is an apocalyptic number.

145985686 is a deficient number, since it is larger than the sum of its proper divisors (127026794).

145985686 is a wasteful number, since it uses less digits than its factorization.

145985686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 947979.

The product of its digits is 2073600, while the sum is 52.

The square root of 145985686 is about 12082.4536415415. The cubic root of 145985686 is about 526.5465339593.

The spelling of 145985686 in words is "one hundred forty-five million, nine hundred eighty-five thousand, six hundred eighty-six".