64953645 has 16 divisors (see below), whose sum is σ = 104881920. Its totient is φ = 34323264.

The previous prime is 64953641. The next prime is 64953653. The reversal of 64953645 is 54635946.

It is not a de Polignac number, because 64953645 - 2² = 64953641 is a prime.

It is a super-3 number, since 3×64953645³ (a number of 24 digits) contains 333 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 64953597 and 64953606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64953641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18229 + ... + 21498.

It is an arithmetic number, because the mean of its divisors is an integer number (6555120).

Almost surely, 2^64953645 is an apocalyptic number.

It is an amenable number.

64953645 is a deficient number, since it is larger than the sum of its proper divisors (39928275).

64953645 is a wasteful number, since it uses less digits than its factorization.

64953645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39844.

The product of its digits is 388800, while the sum is 42.

The square root of 64953645 is about 8059.3824205084. The cubic root of 64953645 is about 401.9769732609.

The spelling of 64953645 in words is "sixty-four million, nine hundred fifty-three thousand, six hundred forty-five".