662067493 has 2 divisors, whose sum is σ = 662067494. Its totient is φ = 662067492.

The previous prime is 662067491. The next prime is 662067509. The reversal of 662067493 is 394760266.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 602113444 + 59954049 = 24538^2 + 7743^2 .

It is a cyclic number.

It is not a de Polignac number, because 662067493 - 2¹ = 662067491 is a prime.

Together with 662067491, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (662067491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 331033746 + 331033747.

It is an arithmetic number, because the mean of its divisors is an integer number (331033747).

Almost surely, 2^662067493 is an apocalyptic number.

It is an amenable number.

662067493 is a deficient number, since it is larger than the sum of its proper divisors (1).

662067493 is an equidigital number, since it uses as much as digits as its factorization.

662067493 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 326592, while the sum is 43.

The square root of 662067493 is about 25730.6722220777. The cubic root of 662067493 is about 871.5669532342.

The spelling of 662067493 in words is "six hundred sixty-two million, sixty-seven thousand, four hundred ninety-three".