145349685 has 24 divisors (see below), whose sum is σ = 271320504. Its totient is φ = 71556480.

The previous prime is 145349623. The next prime is 145349693. The reversal of 145349685 is 586943541.

145349685 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 412164 + 144937521 = 642^2 + 12039^2 .

It is not a de Polignac number, because 145349685 - 2⁶ = 145349621 is a prime.

It is a super-2 number, since 2×145349685² = 42253061859198450, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 145349685.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 123646 + ... + 124815.

It is an arithmetic number, because the mean of its divisors is an integer number (11305021).

Almost surely, 2^145349685 is an apocalyptic number.

145349685 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

145349685 is a deficient number, since it is larger than the sum of its proper divisors (125970819).

145349685 is a wasteful number, since it uses less digits than its factorization.

145349685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 248485 (or 248482 counting only the distinct ones).

The product of its digits is 518400, while the sum is 45.

The square root of 145349685 is about 12056.1057145332. The cubic root of 145349685 is about 525.7807702502.

The spelling of 145349685 in words is "one hundred forty-five million, three hundred forty-nine thousand, six hundred eighty-five".