900145 has 8 divisors (see below), whose sum is σ = 1096704. Its totient is φ = 709104.

The previous prime is 900143. The next prime is 900149. The reversal of 900145 is 541009.

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 900145 - 2¹ = 900143 is a prime.

It is a super-2 number, since 2×900145² = 1620522042050, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (900143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1009 + ... + 1678.

It is an arithmetic number, because the mean of its divisors is an integer number (137088).

2⁹⁰⁰¹⁴⁵ is an apocalyptic number.

It is an amenable number.

900145 is a deficient number, since it is larger than the sum of its proper divisors (196559).

900145 is a wasteful number, since it uses less digits than its factorization.

900145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2759.

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 900145 is about 948.7597166828. The cubic root of 900145 is about 96.5541232177.

The spelling of 900145 in words is "nine hundred thousand, one hundred forty-five".