91634000 has 40 divisors (see below), whose sum is σ = 221575848. Its totient is φ = 36652800.

The previous prime is 91633999. The next prime is 91634003. The reversal of 91634000 is 43619.

It can be written as a sum of positive squares in 4 ways, for example, as 10816 + 91623184 = 104^2 + 9572^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91634003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20909 + ... + 24908.

Almost surely, 2^91634000 is an apocalyptic number.

It is an amenable number.

91634000 is an abundant number, since it is smaller than the sum of its proper divisors (129941848).

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

91634000 is a wasteful number, since it uses less digits than its factorization.

91634000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45840 (or 45824 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 91634000 is about 9572.5649645223. The cubic root of 91634000 is about 450.8363048842.

Adding to 91634000 its reverse (43619), we get a palindrome (91677619).

The spelling of 91634000 in words is "ninety-one million, six hundred thirty-four thousand".