64747863 has 16 divisors (see below), whose sum is σ = 96460000. Its totient is φ = 42923520.

The previous prime is 64747841. The next prime is 64747873. The reversal of 64747863 is 36874746.

It is not a de Polignac number, because 64747863 - 2¹⁴ = 64731479 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64747873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1738 + ... + 11511.

It is an arithmetic number, because the mean of its divisors is an integer number (6028750).

Almost surely, 2^64747863 is an apocalyptic number.

64747863 is a deficient number, since it is larger than the sum of its proper divisors (31712137).

64747863 is a wasteful number, since it uses less digits than its factorization.

64747863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13439 (or 13433 counting only the distinct ones).

The product of its digits is 677376, while the sum is 45.

The square root of 64747863 is about 8046.6056819009. The cubic root of 64747863 is about 401.5520182268.

The spelling of 64747863 in words is "sixty-four million, seven hundred forty-seven thousand, eight hundred sixty-three".