91598364 has 144 divisors (see below), whose sum is σ = 282522240. Its totient is φ = 25583040.

The previous prime is 91598357. The next prime is 91598371. The reversal of 91598364 is 46389519.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (91598357) and next prime (91598371).

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 138667 + ... + 139325.

It is an arithmetic number, because the mean of its divisors is an integer number (1961960).

Almost surely, 2^91598364 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 91598364, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (141261120).

91598364 is an abundant number, since it is smaller than the sum of its proper divisors (190923876).

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

91598364 is a wasteful number, since it uses less digits than its factorization.

91598364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 702 (or 688 counting only the distinct ones).

The product of its digits is 233280, while the sum is 45.

The square root of 91598364 is about 9570.7034224241. The cubic root of 91598364 is about 450.7778546523. Note that the first 3 decimals are identical.

The spelling of 91598364 in words is "ninety-one million, five hundred ninety-eight thousand, three hundred sixty-four".