63953693 has 2 divisors, whose sum is σ = 63953694. Its totient is φ = 63953692.

The previous prime is 63953647. The next prime is 63953707. The reversal of 63953693 is 39635936.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 59552089 + 4401604 = 7717^2 + 2098^2 .

It is a cyclic number.

It is not a de Polignac number, because 63953693 - 2⁶ = 63953629 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63953623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31976846 + 31976847.

It is an arithmetic number, because the mean of its divisors is an integer number (31976847).

Almost surely, 2^63953693 is an apocalyptic number.

It is an amenable number.

63953693 is a deficient number, since it is larger than the sum of its proper divisors (1).

63953693 is an equidigital number, since it uses as much as digits as its factorization.

63953693 is an evil number, because the sum of its binary digits is even.

The product of its digits is 393660, while the sum is 44.

The square root of 63953693 is about 7997.1052887904. The cubic root of 63953693 is about 399.9035038064.

It can be divided in two parts, 63953 and 693, that added together give a palindrome (64646).

The spelling of 63953693 in words is "sixty-three million, nine hundred fifty-three thousand, six hundred ninety-three".