64064919 has 8 divisors (see below), whose sum is σ = 87503472. Its totient is φ = 41668160.

The previous prime is 64064893. The next prime is 64064929. The reversal of 64064919 is 91946046.

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 64064919 - 2²¹ = 61967767 is a prime.

It is a super-2 number, since 2×64064919² = 8208627692953122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64064929) 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, 260304 + ... + 260549.

It is an arithmetic number, because the mean of its divisors is an integer number (10937934).

Almost surely, 2^64064919 is an apocalyptic number.

64064919 is a deficient number, since it is larger than the sum of its proper divisors (23438553).

64064919 is a wasteful number, since it uses less digits than its factorization.

64064919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 520897.

The product of its (nonzero) digits is 46656, while the sum is 39.

The square root of 64064919 is about 8004.0564090966. The cubic root of 64064919 is about 400.1352022124.

It can be divided in two parts, 6406 and 4919, that added together give a triangular number (11325 = T₁₅₀).

The spelling of 64064919 in words is "sixty-four million, sixty-four thousand, nine hundred nineteen".