90748646 has 4 divisors (see below), whose sum is σ = 136122972. Its totient is φ = 45374322.

The previous prime is 90748633. The next prime is 90748649. The reversal of 90748646 is 64684709.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 64684709 = 59 ⋅1096351.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 90748597 and 90748606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90748649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22687160 + ... + 22687163.

It is an arithmetic number, because the mean of its divisors is an integer number (34030743).

Almost surely, 2^90748646 is an apocalyptic number.

90748646 is a deficient number, since it is larger than the sum of its proper divisors (45374326).

90748646 is a wasteful number, since it uses less digits than its factorization.

90748646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45374325.

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

The square root of 90748646 is about 9526.2083747942. The cubic root of 90748646 is about 449.3796324003.

The spelling of 90748646 in words is "ninety million, seven hundred forty-eight thousand, six hundred forty-six".