90647648 has 72 divisors (see below), whose sum is σ = 223618752. Its totient is φ = 35852544.

The previous prime is 90647639. The next prime is 90647653. The reversal of 90647648 is 84674609.

It is a junction number, because it is equal to n+sod(n) for n = 90647599 and 90647608.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18161 + ... + 22607.

It is an arithmetic number, because the mean of its divisors is an integer number (3105816).

Almost surely, 2^90647648 is an apocalyptic number.

90647648 is a gapful number since it is divisible by the number (98) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 90647648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (111809376).

90647648 is an abundant number, since it is smaller than the sum of its proper divisors (132971104).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

90647648 is a wasteful number, since it uses less digits than its factorization.

90647648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4484 (or 4469 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 44.

The square root of 90647648 is about 9520.9058392571. The cubic root of 90647648 is about 449.2128593261.

The spelling of 90647648 in words is "ninety million, six hundred forty-seven thousand, six hundred forty-eight".