64652819 has 16 divisors (see below), whose sum is σ = 85349376. Its totient is φ = 47414400.

The previous prime is 64652773. The next prime is 64652843. The reversal of 64652819 is 91825646.

It is a happy number.

64652819 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 64652819 - 2²⁴ = 47875603 is a prime.

It is a super-2 number, since 2×64652819² = 8359974009293522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (64652869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23387 + ... + 26004.

It is an arithmetic number, because the mean of its divisors is an integer number (5334336).

Almost surely, 2^64652819 is an apocalyptic number.

64652819 is a deficient number, since it is larger than the sum of its proper divisors (20696557).

64652819 is a wasteful number, since it uses less digits than its factorization.

64652819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49426.

The product of its digits is 103680, while the sum is 41.

The square root of 64652819 is about 8040.6976687350. The cubic root of 64652819 is about 401.3554413422.

The spelling of 64652819 in words is "sixty-four million, six hundred fifty-two thousand, eight hundred nineteen".