64889235 has 16 divisors (see below), whose sum is σ = 115358880. Its totient is φ = 34607520.

The previous prime is 64889213. The next prime is 64889249. The reversal of 64889235 is 53298846.

It is not a de Polignac number, because 64889235 - 2¹¹ = 64887187 is a prime.

It is a super-2 number, since 2×64889235² = 8421225637770450, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 240196 + ... + 240465.

It is an arithmetic number, because the mean of its divisors is an integer number (7209930).

Almost surely, 2^64889235 is an apocalyptic number.

64889235 is a deficient number, since it is larger than the sum of its proper divisors (50469645).

64889235 is a wasteful number, since it uses less digits than its factorization.

64889235 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 480675 (or 480669 counting only the distinct ones).

The product of its digits is 414720, while the sum is 45.

The square root of 64889235 is about 8055.3854656373. The cubic root of 64889235 is about 401.8440584733.

The spelling of 64889235 in words is "sixty-four million, eight hundred eighty-nine thousand, two hundred thirty-five".