90748881 has 6 divisors (see below), whose sum is σ = 131081730. Its totient is φ = 60499248.

The previous prime is 90748837. The next prime is 90748891. The reversal of 90748881 is 18884709.

90748881 is a `hidden beast` number, since 90 + 7 + 488 + 81 = 666.

It can be written as a sum of positive squares in only one way, i.e., 62489025 + 28259856 = 7905^2 + 5316^2 .

It is not a de Polignac number, because 90748881 - 2⁹ = 90748369 is a prime.

It is a super-2 number, since 2×90748881² = 16470718805504322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (90748891) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5041596 + ... + 5041613.

It is an arithmetic number, because the mean of its divisors is an integer number (21846955).

Almost surely, 2^90748881 is an apocalyptic number.

It is an amenable number.

90748881 is a deficient number, since it is larger than the sum of its proper divisors (40332849).

90748881 is a wasteful number, since it uses less digits than its factorization.

90748881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10083215 (or 10083212 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 45.

The square root of 90748881 is about 9526.2207091795. The cubic root of 90748881 is about 449.3800203001.

It can be divided in two parts, 9074 and 8881, that added together give a triangular number (17955 = T₁₈₉).

The spelling of 90748881 in words is "ninety million, seven hundred forty-eight thousand, eight hundred eighty-one".