63916537 has 8 divisors (see below), whose sum is σ = 65441160. Its totient is φ = 62409600.

The previous prime is 63916469. The next prime is 63916553. The reversal of 63916537 is 73561936.

It can be written as a sum of positive squares in 4 ways, for example, as 26020201 + 37896336 = 5101^2 + 6156^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 63916537 - 2¹¹ = 63914489 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 63916537.

It is not an unprimeable number, because it can be changed into a prime (63916597) 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 in 7 ways as a sum of consecutive naturals, for example, 3039 + ... + 11707.

It is an arithmetic number, because the mean of its divisors is an integer number (8180145).

Almost surely, 2^63916537 is an apocalyptic number.

It is an amenable number.

63916537 is a deficient number, since it is larger than the sum of its proper divisors (1524623).

63916537 is a wasteful number, since it uses less digits than its factorization.

63916537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8843.

The product of its digits is 102060, while the sum is 40.

The square root of 63916537 is about 7994.7818606889. The cubic root of 63916537 is about 399.8260431085.

The spelling of 63916537 in words is "sixty-three million, nine hundred sixteen thousand, five hundred thirty-seven".