64012863 has 4 divisors (see below), whose sum is σ = 85350488. Its totient is φ = 42675240.

The previous prime is 64012859. The next prime is 64012867. The reversal of 64012863 is 36821046.

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

It is an interprime number because it is at equal distance from previous prime (64012859) and next prime (64012867).

It is not a de Polignac number, because 64012863 - 2² = 64012859 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 64012863.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64012867) 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, 10668808 + ... + 10668813.

It is an arithmetic number, because the mean of its divisors is an integer number (21337622).

Almost surely, 2^64012863 is an apocalyptic number.

64012863 is a deficient number, since it is larger than the sum of its proper divisors (21337625).

64012863 is a wasteful number, since it uses less digits than its factorization.

64012863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21337624.

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 64012863 is about 8000.8038971093. The cubic root of 64012863 is about 400.0267961215.

The spelling of 64012863 in words is "sixty-four million, twelve thousand, eight hundred sixty-three".