675578993 has 2 divisors, whose sum is σ = 675578994. Its totient is φ = 675578992.

The previous prime is 675578951. The next prime is 675579043. The reversal of 675578993 is 399875576.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 368908849 + 306670144 = 19207^2 + 17512^2 .

It is a cyclic number.

It is not a de Polignac number, because 675578993 - 2⁸ = 675578737 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (675578933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 337789496 + 337789497.

It is an arithmetic number, because the mean of its divisors is an integer number (337789497).

Almost surely, 2^675578993 is an apocalyptic number.

It is an amenable number.

675578993 is a deficient number, since it is larger than the sum of its proper divisors (1).

675578993 is an equidigital number, since it uses as much as digits as its factorization.

675578993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14288400, while the sum is 59.

The square root of 675578993 is about 25991.9024505710. The cubic root of 675578993 is about 877.4560624965.

The spelling of 675578993 in words is "six hundred seventy-five million, five hundred seventy-eight thousand, nine hundred ninety-three".