91026634 has 4 divisors (see below), whose sum is σ = 136539954. Its totient is φ = 45513316.

The previous prime is 91026577. The next prime is 91026647. The reversal of 91026634 is 43662019.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 80946009 + 10080625 = 8997^2 + 3175^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 91026596 and 91026605.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22756657 + ... + 22756660.

Almost surely, 2^91026634 is an apocalyptic number.

91026634 is a deficient number, since it is larger than the sum of its proper divisors (45513320).

91026634 is a wasteful number, since it uses less digits than its factorization.

91026634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45513319.

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 91026634 is about 9540.7879129556. The cubic root of 91026634 is about 449.8380223615.

The spelling of 91026634 in words is "ninety-one million, twenty-six thousand, six hundred thirty-four".