90987602 has 8 divisors (see below), whose sum is σ = 137174796. Its totient is φ = 45262672.

The previous prime is 90987601. The next prime is 90987619. The reversal of 90987602 is 20678909.

It can be written as a sum of positive squares in 2 ways, for example, as 90801841 + 185761 = 9529^2 + 431^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 90987602.

It is not an unprimeable number, because it can be changed into a prime (90987601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 115073 + ... + 115860.

Almost surely, 2^90987602 is an apocalyptic number.

90987602 is a deficient number, since it is larger than the sum of its proper divisors (46187194).

90987602 is a wasteful number, since it uses less digits than its factorization.

90987602 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231132.

The product of its (nonzero) digits is 54432, while the sum is 41.

The square root of 90987602 is about 9538.7421602641. The cubic root of 90987602 is about 449.7737166848.

The spelling of 90987602 in words is "ninety million, nine hundred eighty-seven thousand, six hundred two".