64755863 has 4 divisors (see below), whose sum is σ = 65853480. Its totient is φ = 63658248.

The previous prime is 64755797. The next prime is 64755871. The reversal of 64755863 is 36855746.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 64755863 - 2¹⁰ = 64754839 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 (64754863) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 548720 + ... + 548837.

It is an arithmetic number, because the mean of its divisors is an integer number (16463370).

Almost surely, 2^64755863 is an apocalyptic number.

64755863 is a deficient number, since it is larger than the sum of its proper divisors (1097617).

64755863 is a wasteful number, since it uses less digits than its factorization.

64755863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1097616.

The product of its digits is 604800, while the sum is 44.

The square root of 64755863 is about 8047.1027705628. The cubic root of 64755863 is about 401.5685556264.

The spelling of 64755863 in words is "sixty-four million, seven hundred fifty-five thousand, eight hundred sixty-three".