64805645 has 8 divisors (see below), whose sum is σ = 77906400. Its totient is φ = 51751440.

The previous prime is 64805579. The next prime is 64805669. The reversal of 64805645 is 54650846.

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

It is not a de Polignac number, because 64805645 - 2¹² = 64801549 is a prime.

It is a super-3 number, since 3×64805645³ (a number of 24 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 64805599 and 64805608.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8495 + ... + 14204.

It is an arithmetic number, because the mean of its divisors is an integer number (9738300).

Almost surely, 2^64805645 is an apocalyptic number.

It is an amenable number.

64805645 is a deficient number, since it is larger than the sum of its proper divisors (13100755).

64805645 is a wasteful number, since it uses less digits than its factorization.

64805645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23275.

The product of its (nonzero) digits is 115200, while the sum is 38.

The square root of 64805645 is about 8050.1953392449. The cubic root of 64805645 is about 401.6714331335.

The spelling of 64805645 in words is "sixty-four million, eight hundred five thousand, six hundred forty-five".