64403343 has 10 divisors (see below), whose sum is σ = 96207584. Its totient is φ = 42935508.

The previous prime is 64403341. The next prime is 64403359. The reversal of 64403343 is 34330446.

It is not a de Polignac number, because 64403343 - 2¹ = 64403341 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64403341) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 397471 + ... + 397632.

Almost surely, 2^64403343 is an apocalyptic number.

64403343 is a deficient number, since it is larger than the sum of its proper divisors (31804241).

64403343 is an equidigital number, since it uses as much as digits as its factorization.

64403343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 795115 (or 795106 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 27.

The square root of 64403343 is about 8025.1693440076. The cubic root of 64403343 is about 400.8385388199.

Adding to 64403343 its reverse (34330446), we get a palindrome (98733789).

It can be divided in two parts, 64403 and 343, that added together give a palindrome (64746).

The spelling of 64403343 in words is "sixty-four million, four hundred three thousand, three hundred forty-three".