145285685 has 16 divisors (see below), whose sum is σ = 189442560. Its totient is φ = 106557120.

The previous prime is 145285633. The next prime is 145285697. The reversal of 145285685 is 586582541.

It is not a de Polignac number, because 145285685 - 2⁸ = 145285429 is a prime.

It is a super-2 number, since 2×145285685² = 42215860531838450, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21722 + ... + 27611.

It is an arithmetic number, because the mean of its divisors is an integer number (11840160).

Almost surely, 2^145285685 is an apocalyptic number.

It is an amenable number.

145285685 is a deficient number, since it is larger than the sum of its proper divisors (44156875).

145285685 is a wasteful number, since it uses less digits than its factorization.

145285685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49388.

The product of its digits is 384000, while the sum is 44.

The square root of 145285685 is about 12053.4511655376. The cubic root of 145285685 is about 525.7035887748.

The spelling of 145285685 in words is "one hundred forty-five million, two hundred eighty-five thousand, six hundred eighty-five".