993679 has 2 divisors, whose sum is σ = 993680. Its totient is φ = 993678.

The previous prime is 993647. The next prime is 993683. The reversal of 993679 is 976399.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 993679 - 2⁵ = 993647 is a prime.

993679 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (993689) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 496839 + 496840.

It is an arithmetic number, because the mean of its divisors is an integer number (496840).

2⁹⁹³⁶⁷⁹ is an apocalyptic number.

993679 is a deficient number, since it is larger than the sum of its proper divisors (1).

993679 is an equidigital number, since it uses as much as digits as its factorization.

993679 is an evil number, because the sum of its binary digits is even.

The product of its digits is 91854, while the sum is 43.

The square root of 993679 is about 996.8344897725. The cubic root of 993679 is about 99.7888544895.

The spelling of 993679 in words is "nine hundred ninety-three thousand, six hundred seventy-nine".