64961853 has 8 divisors (see below), whose sum is σ = 94490016. Its totient is φ = 39370800.

The previous prime is 64961851. The next prime is 64961881. The reversal of 64961853 is 35816946.

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

It is not a de Polignac number, because 64961853 - 2¹ = 64961851 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64961851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 984238 + ... + 984303.

It is an arithmetic number, because the mean of its divisors is an integer number (11811252).

Almost surely, 2^64961853 is an apocalyptic number.

It is an amenable number.

64961853 is a deficient number, since it is larger than the sum of its proper divisors (29528163).

64961853 is a wasteful number, since it uses less digits than its factorization.

64961853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1968555.

The product of its digits is 155520, while the sum is 42.

The square root of 64961853 is about 8059.8916245816. The cubic root of 64961853 is about 401.9939047614.

The spelling of 64961853 in words is "sixty-four million, nine hundred sixty-one thousand, eight hundred fifty-three".