145708805 has 12 divisors (see below), whose sum is σ = 192191916. Its totient is φ = 105969600.

The previous prime is 145708769. The next prime is 145708831. The reversal of 145708805 is 508807541.

145708805 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 2 ways, for example, as 67881121 + 77827684 = 8239^2 + 8822^2 .

It is not a de Polignac number, because 145708805 - 2¹⁸ = 145446661 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 119816 + ... + 121025.

It is an arithmetic number, because the mean of its divisors is an integer number (16015993).

Almost surely, 2^145708805 is an apocalyptic number.

It is an amenable number.

145708805 is a deficient number, since it is larger than the sum of its proper divisors (46483111).

145708805 is a wasteful number, since it uses less digits than its factorization.

145708805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240868 (or 240857 counting only the distinct ones).

The product of its (nonzero) digits is 44800, while the sum is 38.

The square root of 145708805 is about 12070.9902245011. The cubic root of 145708805 is about 526.2134350952.

The spelling of 145708805 in words is "one hundred forty-five million, seven hundred eight thousand, eight hundred five".