90671845 has 8 divisors (see below), whose sum is σ = 118697760. Its totient is φ = 65943120.

The previous prime is 90671831. The next prime is 90671851. The reversal of 90671845 is 54817609.

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

It is not a de Polignac number, because 90671845 - 2⁵ = 90671813 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 90671798 and 90671807.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 824235 + ... + 824344.

It is an arithmetic number, because the mean of its divisors is an integer number (14837220).

Almost surely, 2^90671845 is an apocalyptic number.

It is an amenable number.

90671845 is a deficient number, since it is larger than the sum of its proper divisors (28025915).

90671845 is a wasteful number, since it uses less digits than its factorization.

90671845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1648595.

The product of its (nonzero) digits is 60480, while the sum is 40.

The square root of 90671845 is about 9522.1764843968. The cubic root of 90671845 is about 449.2528259323.

The spelling of 90671845 in words is "ninety million, six hundred seventy-one thousand, eight hundred forty-five".