90648680653 has 4 divisors (see below), whose sum is σ = 91362449920. Its totient is φ = 89934911388.

The previous prime is 90648680623. The next prime is 90648680687. The reversal of 90648680653 is 35608684609.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 35608684609 = 5903 ⋅6032303.

It is a cyclic number.

It is not a de Polignac number, because 90648680653 - 2²¹ = 90646583501 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 90648680594 and 90648680603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90648680623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 356884443 + ... + 356884696.

It is an arithmetic number, because the mean of its divisors is an integer number (22840612480).

Almost surely, 2^90648680653 is an apocalyptic number.

It is an amenable number.

90648680653 is a deficient number, since it is larger than the sum of its proper divisors (713769267).

90648680653 is a wasteful number, since it uses less digits than its factorization.

90648680653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 713769266.

The product of its (nonzero) digits is 7464960, while the sum is 55.

The spelling of 90648680653 in words is "ninety billion, six hundred forty-eight million, six hundred eighty thousand, six hundred fifty-three".