90688412 has 6 divisors (see below), whose sum is σ = 158704728. Its totient is φ = 45344204.

The previous prime is 90688399. The next prime is 90688417. The reversal of 90688412 is 21488609.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90688417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11336048 + ... + 11336055.

It is an arithmetic number, because the mean of its divisors is an integer number (26450788).

Almost surely, 2^90688412 is an apocalyptic number.

It is an amenable number.

90688412 is a deficient number, since it is larger than the sum of its proper divisors (68016316).

90688412 is a wasteful number, since it uses less digits than its factorization.

90688412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22672107 (or 22672105 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 38.

The square root of 90688412 is about 9523.0463613279. The cubic root of 90688412 is about 449.2801858340.

The spelling of 90688412 in words is "ninety million, six hundred eighty-eight thousand, four hundred twelve".