145985697 has 48 divisors (see below), whose sum is σ = 251579328. Its totient is φ = 80403840.

The previous prime is 145985687. The next prime is 145985699. The reversal of 145985697 is 796589541.

It is not a de Polignac number, because 145985697 - 2¹⁶ = 145920161 is a prime.

It is a super-3 number, since 3×145985697³ (a number of 25 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (145985699) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 85383 + ... + 87075.

It is an arithmetic number, because the mean of its divisors is an integer number (5241236).

Almost surely, 2^145985697 is an apocalyptic number.

It is an amenable number.

145985697 is a deficient number, since it is larger than the sum of its proper divisors (105593631).

145985697 is a wasteful number, since it uses less digits than its factorization.

145985697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1790 (or 1787 counting only the distinct ones).

The product of its digits is 2721600, while the sum is 54.

The square root of 145985697 is about 12082.4540967471. The cubic root of 145985697 is about 526.5465471843.

The spelling of 145985697 in words is "one hundred forty-five million, nine hundred eighty-five thousand, six hundred ninety-seven".