64000403 has 4 divisors (see below), whose sum is σ = 64029768. Its totient is φ = 63971040.

The previous prime is 64000381. The next prime is 64000411. The reversal of 64000403 is 30400046.

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 64000403 - 2⁸ = 64000147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64000423) 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, 11126 + ... + 15867.

It is an arithmetic number, because the mean of its divisors is an integer number (16007442).

Almost surely, 2^64000403 is an apocalyptic number.

64000403 is a deficient number, since it is larger than the sum of its proper divisors (29365).

64000403 is a wasteful number, since it uses less digits than its factorization.

64000403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29364.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 64000403 is about 8000.0251874603. The cubic root of 64000403 is about 400.0008395816. Note that the first 3 decimals are identical.

Adding to 64000403 its reverse (30400046), we get a palindrome (94400449).

The spelling of 64000403 in words is "sixty-four million, four hundred three", and thus it is an aban number.