90671788 has 12 divisors (see below), whose sum is σ = 158769072. Its totient is φ = 45309200.

The previous prime is 90671783. The next prime is 90671813. The reversal of 90671788 is 88717609.

It is a plaindrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (90671783) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2313 + ... + 13663.

It is an arithmetic number, because the mean of its divisors is an integer number (13230756).

Almost surely, 2^90671788 is an apocalyptic number.

It is an amenable number.

90671788 is a deficient number, since it is larger than the sum of its proper divisors (68097284).

90671788 is a wasteful number, since it uses less digits than its factorization.

90671788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13352 (or 13350 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 46.

The square root of 90671788 is about 9522.1734913832. The cubic root of 90671788 is about 449.2527317927.

The spelling of 90671788 in words is "ninety million, six hundred seventy-one thousand, seven hundred eighty-eight".