64830856 has 8 divisors (see below), whose sum is σ = 121557870. Its totient is φ = 32415424.

The previous prime is 64830847. The next prime is 64830923. The reversal of 64830856 is 65803846.

It can be written as a sum of positive squares in only one way, i.e., 40525956 + 24304900 = 6366^2 + 4930^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4051921 + ... + 4051936.

Almost surely, 2^64830856 is an apocalyptic number.

It is an amenable number.

64830856 is a deficient number, since it is larger than the sum of its proper divisors (56727014).

64830856 is a wasteful number, since it uses less digits than its factorization.

64830856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8103863 (or 8103859 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 40.

The square root of 64830856 is about 8051.7610496090. The cubic root of 64830856 is about 401.7235130905.

The spelling of 64830856 in words is "sixty-four million, eight hundred thirty thousand, eight hundred fifty-six".