91248635 has 8 divisors (see below), whose sum is σ = 110286960. Its totient is φ = 72473184.

The previous prime is 91248631. The next prime is 91248653. The reversal of 91248635 is 53684219.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 91248635 - 2² = 91248631 is a prime.

It is not an unprimeable number, because it can be changed into a prime (91248631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64952 + ... + 66341.

It is an arithmetic number, because the mean of its divisors is an integer number (13785870).

Almost surely, 2^91248635 is an apocalyptic number.

91248635 is a deficient number, since it is larger than the sum of its proper divisors (19038325).

91248635 is a wasteful number, since it uses less digits than its factorization.

91248635 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131437.

The product of its digits is 51840, while the sum is 38.

The square root of 91248635 is about 9552.4151396388. The cubic root of 91248635 is about 450.2034224324.

The spelling of 91248635 in words is "ninety-one million, two hundred forty-eight thousand, six hundred thirty-five".