64805272 has 16 divisors (see below), whose sum is σ = 138868560. Its totient is φ = 27773664.

The previous prime is 64805267. The next prime is 64805287. The reversal of 64805272 is 27250846.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 578563 + ... + 578674.

It is an arithmetic number, because the mean of its divisors is an integer number (8679285).

Almost surely, 2^64805272 is an apocalyptic number.

It is an amenable number.

64805272 is an abundant number, since it is smaller than the sum of its proper divisors (74063288).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64805272 is a wasteful number, since it uses less digits than its factorization.

64805272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1157250 (or 1157246 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 34.

The square root of 64805272 is about 8050.1721720718. The cubic root of 64805272 is about 401.6706625024.

The spelling of 64805272 in words is "sixty-four million, eight hundred five thousand, two hundred seventy-two".