91514623 has 4 divisors (see below), whose sum is σ = 93241368. Its totient is φ = 89787880.

The previous prime is 91514609. The next prime is 91514629. The reversal of 91514623 is 32641519.

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

It is a cyclic number.

It is not a de Polignac number, because 91514623 - 2¹³ = 91506431 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91514629) 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, 863293 + ... + 863398.

It is an arithmetic number, because the mean of its divisors is an integer number (23310342).

Almost surely, 2^91514623 is an apocalyptic number.

91514623 is a deficient number, since it is larger than the sum of its proper divisors (1726745).

91514623 is a wasteful number, since it uses less digits than its factorization.

91514623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1726744.

The product of its digits is 6480, while the sum is 31.

The square root of 91514623 is about 9566.3275607727. The cubic root of 91514623 is about 450.6404428179.

The spelling of 91514623 in words is "ninety-one million, five hundred fourteen thousand, six hundred twenty-three".