91380634 has 8 divisors (see below), whose sum is σ = 137126880. Its totient is φ = 45671676.

The previous prime is 91380631. The next prime is 91380637. The reversal of 91380634 is 43608319.

It is an interprime number because it is at equal distance from previous prime (91380631) and next prime (91380637).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 91380634.

It is not an unprimeable number, because it can be changed into a prime (91380631) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2064 + ... + 13675.

It is an arithmetic number, because the mean of its divisors is an integer number (17140860).

Almost surely, 2^91380634 is an apocalyptic number.

91380634 is a deficient number, since it is larger than the sum of its proper divisors (45746246).

91380634 is a wasteful number, since it uses less digits than its factorization.

91380634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18644.

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 91380634 is about 9559.3218378711. The cubic root of 91380634 is about 450.4204038313.

The spelling of 91380634 in words is "ninety-one million, three hundred eighty thousand, six hundred thirty-four".