91693601 has 4 divisors (see below), whose sum is σ = 96519600. Its totient is φ = 86867604.

The previous prime is 91693583. The next prime is 91693649. The reversal of 91693601 is 10639619.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 10639619 = 43 ⋅247433.

It is a cyclic number.

It is not a de Polignac number, because 91693601 - 2¹⁴ = 91677217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91693681) 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, 2412971 + ... + 2413008.

It is an arithmetic number, because the mean of its divisors is an integer number (24129900).

Almost surely, 2^91693601 is an apocalyptic number.

It is an amenable number.

91693601 is a deficient number, since it is larger than the sum of its proper divisors (4825999).

91693601 is a wasteful number, since it uses less digits than its factorization.

91693601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4825998.

The product of its (nonzero) digits is 8748, while the sum is 35.

The square root of 91693601 is about 9575.6775739370. The cubic root of 91693601 is about 450.9340286949.

The spelling of 91693601 in words is "ninety-one million, six hundred ninety-three thousand, six hundred one".