64128303 has 12 divisors (see below), whose sum is σ = 93112240. Its totient is φ = 42529536.

The previous prime is 64128283. The next prime is 64128343. The reversal of 64128303 is 30382146.

It is a happy number.

64128303 is nontrivially palindromic in base 2.

It is not a de Polignac number, because 64128303 - 2⁸ = 64128047 is a prime.

It is a super-2 number, since 2×64128303² = 8224878491319618, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64128343) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16723 + ... + 20196.

Almost surely, 2^64128303 is an apocalyptic number.

64128303 is a deficient number, since it is larger than the sum of its proper divisors (28983937).

64128303 is a wasteful number, since it uses less digits than its factorization.

64128303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37118 (or 37115 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 64128303 is about 8008.0149225635. The cubic root of 64128303 is about 400.2671194949.

The spelling of 64128303 in words is "sixty-four million, one hundred twenty-eight thousand, three hundred three".