91654873 has 4 divisors (see below), whose sum is σ = 92238820. Its totient is φ = 91070928.

The previous prime is 91654853. The next prime is 91654889. The reversal of 91654873 is 37845619.

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

It can be written as a sum of positive squares in 2 ways, for example, as 27846729 + 63808144 = 5277^2 + 7988^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-91654873 is a prime.

It is a super-2 number, since 2×91654873² = 16801231489292258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91654853) 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, 291738 + ... + 292051.

It is an arithmetic number, because the mean of its divisors is an integer number (23059705).

Almost surely, 2^91654873 is an apocalyptic number.

It is an amenable number.

91654873 is a deficient number, since it is larger than the sum of its proper divisors (583947).

91654873 is a wasteful number, since it uses less digits than its factorization.

91654873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 583946.

The product of its digits is 181440, while the sum is 43.

The square root of 91654873 is about 9573.6551535973. The cubic root of 91654873 is about 450.8705337795.

The spelling of 91654873 in words is "ninety-one million, six hundred fifty-four thousand, eight hundred seventy-three".