93661387 has 4 divisors (see below), whose sum is σ = 96891120. Its totient is φ = 90431656.

The previous prime is 93661369. The next prime is 93661391. The reversal of 93661387 is 78316639.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-93661387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (93661327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1614823 + ... + 1614880.

It is an arithmetic number, because the mean of its divisors is an integer number (24222780).

Almost surely, 2^93661387 is an apocalyptic number.

93661387 is a deficient number, since it is larger than the sum of its proper divisors (3229733).

93661387 is a wasteful number, since it uses less digits than its factorization.

93661387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3229732.

The product of its digits is 163296, while the sum is 43.

The square root of 93661387 is about 9677.8813280594. The cubic root of 93661387 is about 454.1369737492.

The spelling of 93661387 in words is "ninety-three million, six hundred sixty-one thousand, three hundred eighty-seven".