63985797 has 24 divisors (see below), whose sum is σ = 93899520. Its totient is φ = 41983200.

The previous prime is 63985783. The next prime is 63985811. The reversal of 63985797 is 79758936.

63985797 is a `hidden beast` number, since 63 + 9 + 8 + 579 + 7 = 666.

It is an interprime number because it is at equal distance from previous prime (63985783) and next prime (63985811).

It is not a de Polignac number, because 63985797 - 2⁸ = 63985541 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63985997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 267604 + ... + 267842.

It is an arithmetic number, because the mean of its divisors is an integer number (3912480).

Almost surely, 2^63985797 is an apocalyptic number.

It is an amenable number.

63985797 is a deficient number, since it is larger than the sum of its proper divisors (29913723).

63985797 is a wasteful number, since it uses less digits than its factorization.

63985797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 593 (or 590 counting only the distinct ones).

The product of its digits is 2857680, while the sum is 54.

The square root of 63985797 is about 7999.1122632452. The cubic root of 63985797 is about 399.9704082275.

It can be divided in two parts, 639 and 85797, that added together give a square (86436 = 294²).

The spelling of 63985797 in words is "sixty-three million, nine hundred eighty-five thousand, seven hundred ninety-seven".