64002663 has 8 divisors (see below), whose sum is σ = 94818800. Its totient is φ = 42668424.

The previous prime is 64002661. The next prime is 64002667. The reversal of 64002663 is 36620046.

It is not a de Polignac number, because 64002663 - 2¹ = 64002661 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 2370469 = 64002663 / (6 + 4 + 0 + 0 + 2 + 6 + 6 + 3).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64002661) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1185208 + ... + 1185261.

It is an arithmetic number, because the mean of its divisors is an integer number (11852350).

Almost surely, 2^64002663 is an apocalyptic number.

64002663 is a deficient number, since it is larger than the sum of its proper divisors (30816137).

64002663 is a wasteful number, since it uses less digits than its factorization.

64002663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2370478 (or 2370472 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

The square root of 64002663 is about 8000.1664357687. The cubic root of 64002663 is about 400.0055478397.

The spelling of 64002663 in words is "sixty-four million, two thousand, six hundred sixty-three".