663062557 has 2 divisors, whose sum is σ = 663062558. Its totient is φ = 663062556.

The previous prime is 663062479. The next prime is 663062567. The reversal of 663062557 is 755260366.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 487261476 + 175801081 = 22074^2 + 13259^2 .

It is a cyclic number.

It is not a de Polignac number, because 663062557 - 2⁷ = 663062429 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (663062567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 331531278 + 331531279.

It is an arithmetic number, because the mean of its divisors is an integer number (331531279).

Almost surely, 2^663062557 is an apocalyptic number.

It is an amenable number.

663062557 is a deficient number, since it is larger than the sum of its proper divisors (1).

663062557 is an equidigital number, since it uses as much as digits as its factorization.

663062557 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 226800, while the sum is 40.

The square root of 663062557 is about 25750.0011067961. The cubic root of 663062557 is about 872.0033794198.

The spelling of 663062557 in words is "six hundred sixty-three million, sixty-two thousand, five hundred fifty-seven".