64405003 has 16 divisors (see below), whose sum is σ = 73382400. Its totient is φ = 56034720.

The previous prime is 64404997. The next prime is 64405021. The reversal of 64405003 is 30050446.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64405003 is a prime.

It is a super-2 number, since 2×64405003² = 8296008822860018, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (64405063) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58488 + ... + 59578.

It is an arithmetic number, because the mean of its divisors is an integer number (4586400).

Almost surely, 2^64405003 is an apocalyptic number.

64405003 is a deficient number, since it is larger than the sum of its proper divisors (8977397).

64405003 is a wasteful number, since it uses less digits than its factorization.

64405003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1362.

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 64405003 is about 8025.2727679500. The cubic root of 64405003 is about 400.8419826694.

Adding to 64405003 its reverse (30050446), we get a palindrome (94455449).

The spelling of 64405003 in words is "sixty-four million, four hundred five thousand, three".