662544397 has 2 divisors, whose sum is σ = 662544398. Its totient is φ = 662544396.

The previous prime is 662544347. The next prime is 662544409. The reversal of 662544397 is 793445266.

662544397 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 455011561 + 207532836 = 21331^2 + 14406^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-662544397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (662544317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 331272198 + 331272199.

It is an arithmetic number, because the mean of its divisors is an integer number (331272199).

Almost surely, 2^662544397 is an apocalyptic number.

It is an amenable number.

662544397 is a deficient number, since it is larger than the sum of its proper divisors (1).

662544397 is an equidigital number, since it uses as much as digits as its factorization.

662544397 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1088640, while the sum is 46.

The square root of 662544397 is about 25739.9377815876. The cubic root of 662544397 is about 871.7761735974.

The spelling of 662544397 in words is "six hundred sixty-two million, five hundred forty-four thousand, three hundred ninety-seven".