63531693 has 6 divisors (see below), whose sum is σ = 91768014. Its totient is φ = 42354456.

The previous prime is 63531667. The next prime is 63531707. The reversal of 63531693 is 39613536.

63531693 is a `hidden beast` number, since 63 + 531 + 69 + 3 = 666.

It can be written as a sum of positive squares in only one way, i.e., 59259204 + 4272489 = 7698^2 + 2067^2 .

It is not a de Polignac number, because 63531693 - 2¹³ = 63523501 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63531653) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3529530 + ... + 3529547.

It is an arithmetic number, because the mean of its divisors is an integer number (15294669).

Almost surely, 2^63531693 is an apocalyptic number.

It is an amenable number.

63531693 is a deficient number, since it is larger than the sum of its proper divisors (28236321).

63531693 is a wasteful number, since it uses less digits than its factorization.

63531693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7059083 (or 7059080 counting only the distinct ones).

The product of its digits is 43740, while the sum is 36.

The square root of 63531693 is about 7970.6770728715. The cubic root of 63531693 is about 399.0219710139.

The spelling of 63531693 in words is "sixty-three million, five hundred thirty-one thousand, six hundred ninety-three".