64002231 has 20 divisors (see below), whose sum is σ = 95913312. Its totient is φ = 42532128.

The previous prime is 64002221. The next prime is 64002233. The reversal of 64002231 is 13220046.

It is a happy number.

64002231 is a `hidden beast` number, since 640 + 0 + 2 + 23 + 1 = 666.

It is not a de Polignac number, because 64002231 - 2²² = 59807927 is a prime.

It is a super-2 number, since 2×64002231² = 8192571145954722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64002233) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 28651 + ... + 30803.

Almost surely, 2^64002231 is an apocalyptic number.

64002231 is a deficient number, since it is larger than the sum of its proper divisors (31911081).

64002231 is a wasteful number, since it uses less digits than its factorization.

64002231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2532 (or 2523 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 64002231 is about 8000.1394362848. The cubic root of 64002231 is about 400.0046478627.

Adding to 64002231 its reverse (13220046), we get a palindrome (77222277).

The spelling of 64002231 in words is "sixty-four million, two thousand, two hundred thirty-one".