64234987 has 8 divisors (see below), whose sum is σ = 65982672. Its totient is φ = 62496000.

The previous prime is 64234981. The next prime is 64235009. The reversal of 64234987 is 78943246.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 64234987 - 2¹⁵ = 64202219 is a prime.

It is a super-2 number, since 2×64234987² = 8252267109780338, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64234981) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14488 + ... + 18394.

It is an arithmetic number, because the mean of its divisors is an integer number (8247834).

Almost surely, 2^64234987 is an apocalyptic number.

64234987 is a deficient number, since it is larger than the sum of its proper divisors (1747685).

64234987 is a wasteful number, since it uses less digits than its factorization.

64234987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4349.

The product of its digits is 290304, while the sum is 43.

The square root of 64234987 is about 8014.6732310182. The cubic root of 64234987 is about 400.4889583059.

The spelling of 64234987 in words is "sixty-four million, two hundred thirty-four thousand, nine hundred eighty-seven".