145859785 has 16 divisors (see below), whose sum is σ = 176836176. Its totient is φ = 115492608.

The previous prime is 145859783. The next prime is 145859797. The reversal of 145859785 is 587958541.

It can be written as a sum of positive squares in 8 ways, for example, as 18011536 + 127848249 = 4244^2 + 11307^2 .

It is a cyclic number.

It is not a de Polignac number, because 145859785 - 2¹ = 145859783 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145859783) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 367207 + ... + 367603.

It is an arithmetic number, because the mean of its divisors is an integer number (11052261).

Almost surely, 2^145859785 is an apocalyptic number.

It is an amenable number.

145859785 is a deficient number, since it is larger than the sum of its proper divisors (30976391).

145859785 is a wasteful number, since it uses less digits than its factorization.

145859785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 972.

The product of its digits is 2016000, while the sum is 52.

The square root of 145859785 is about 12077.2424418822. The cubic root of 145859785 is about 526.3951223072.

The spelling of 145859785 in words is "one hundred forty-five million, eight hundred fifty-nine thousand, seven hundred eighty-five".