993336677 has 4 divisors (see below), whose sum is σ = 993415500. Its totient is φ = 993257856.

The previous prime is 993336671. The next prime is 993336691. The reversal of 993336677 is 776633399.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 776633399 = 1499 ⋅518101.

It can be written as a sum of positive squares in 2 ways, for example, as 10764961 + 982571716 = 3281^2 + 31346^2 .

It is a cyclic number.

It is not a de Polignac number, because 993336677 - 2¹² = 993332581 is a prime.

It is a Duffinian number.

It is a zygodrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (993336671) 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 3 ways as a sum of consecutive naturals, for example, 15788 + ... + 47285.

It is an arithmetic number, because the mean of its divisors is an integer number (248353875).

Almost surely, 2^993336677 is an apocalyptic number.

It is an amenable number.

993336677 is a deficient number, since it is larger than the sum of its proper divisors (78823).

993336677 is a wasteful number, since it uses less digits than its factorization.

993336677 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78822.

The product of its digits is 3857868, while the sum is 53.

The square root of 993336677 is about 31517.2441212743. The cubic root of 993336677 is about 997.7739406702.

The spelling of 993336677 in words is "nine hundred ninety-three million, three hundred thirty-six thousand, six hundred seventy-seven".