62731993 has 2 divisors, whose sum is σ = 62731994. Its totient is φ = 62731992.

The previous prime is 62731967. The next prime is 62731997. The reversal of 62731993 is 39913726.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40857664 + 21874329 = 6392^2 + 4677^2 .

It is a cyclic number.

It is not a de Polignac number, because 62731993 - 2⁹ = 62731481 is a prime.

It is not a weakly prime, because it can be changed into another prime (62731997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31365996 + 31365997.

It is an arithmetic number, because the mean of its divisors is an integer number (31365997).

Almost surely, 2^62731993 is an apocalyptic number.

It is an amenable number.

62731993 is a deficient number, since it is larger than the sum of its proper divisors (1).

62731993 is an equidigital number, since it uses as much as digits as its factorization.

62731993 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 61236, while the sum is 40.

The square root of 62731993 is about 7920.3530855638. The cubic root of 62731993 is about 397.3406779462.

The spelling of 62731993 in words is "sixty-two million, seven hundred thirty-one thousand, nine hundred ninety-three".