662980823 has 2 divisors, whose sum is σ = 662980824. Its totient is φ = 662980822.

The previous prime is 662980789. The next prime is 662980891. The reversal of 662980823 is 328089266.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 662980823 - 2⁸ = 662980567 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (662989823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 331490411 + 331490412.

It is an arithmetic number, because the mean of its divisors is an integer number (331490412).

Almost surely, 2^662980823 is an apocalyptic number.

662980823 is a deficient number, since it is larger than the sum of its proper divisors (1).

662980823 is an equidigital number, since it uses as much as digits as its factorization.

662980823 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 248832, while the sum is 44.

The square root of 662980823 is about 25748.4139899917. The cubic root of 662980823 is about 871.9675480832.

The spelling of 662980823 in words is "six hundred sixty-two million, nine hundred eighty thousand, eight hundred twenty-three".