145698589 has 8 divisors (see below), whose sum is σ = 146622168. Its totient is φ = 144778560.

The previous prime is 145698571. The next prime is 145698613. The reversal of 145698589 is 985896541.

It can be written as a sum of positive squares in 4 ways, for example, as 7518564 + 138180025 = 2742^2 + 11755^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 145698589 - 2¹³ = 145690397 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145698529) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 145639 + ... + 146635.

It is an arithmetic number, because the mean of its divisors is an integer number (18327771).

Almost surely, 2^145698589 is an apocalyptic number.

It is an amenable number.

145698589 is a deficient number, since it is larger than the sum of its proper divisors (923579).

145698589 is an equidigital number, since it uses as much as digits as its factorization.

145698589 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1775.

The product of its digits is 3110400, while the sum is 55.

The square root of 145698589 is about 12070.5670537883. The cubic root of 145698589 is about 526.2011367716.

The spelling of 145698589 in words is "one hundred forty-five million, six hundred ninety-eight thousand, five hundred eighty-nine".