64546445 has 8 divisors (see below), whose sum is σ = 77502744. Its totient is φ = 51605824.

The previous prime is 64546387. The next prime is 64546453. The reversal of 64546445 is 54464546.

It can be written as a sum of positive squares in 4 ways, for example, as 16410601 + 48135844 = 4051^2 + 6938^2 .

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 64546445 - 2¹² = 64542349 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 64546399 and 64546408.

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, 9047 + ... + 14523.

It is an arithmetic number, because the mean of its divisors is an integer number (9687843).

Almost surely, 2^64546445 is an apocalyptic number.

It is an amenable number.

64546445 is a deficient number, since it is larger than the sum of its proper divisors (12956299).

64546445 is a wasteful number, since it uses less digits than its factorization.

64546445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7839.

The product of its digits is 230400, while the sum is 38.

The square root of 64546445 is about 8034.0802211579. The cubic root of 64546445 is about 401.1352023248.

The spelling of 64546445 in words is "sixty-four million, five hundred forty-six thousand, four hundred forty-five".