90143006 has 16 divisors (see below), whose sum is σ = 138537216. Its totient is φ = 43976856.

The previous prime is 90142981. The next prime is 90143033. The reversal of 90143006 is 60034109.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11195 + ... + 17481.

It is an arithmetic number, because the mean of its divisors is an integer number (8658576).

Almost surely, 2^90143006 is an apocalyptic number.

90143006 is a deficient number, since it is larger than the sum of its proper divisors (48394210).

90143006 is a wasteful number, since it uses less digits than its factorization.

90143006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6463.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 90143006 is about 9494.3670668455. The cubic root of 90143006 is about 448.3777074815.

The spelling of 90143006 in words is "ninety million, one hundred forty-three thousand, six".