64953785 has 16 divisors (see below), whose sum is σ = 84221760. Its totient is φ = 47805120.

The previous prime is 64953781. The next prime is 64953793. The reversal of 64953785 is 58735946.

It is not a de Polignac number, because 64953785 - 2² = 64953781 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (64953781) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20006 + ... + 23024.

It is an arithmetic number, because the mean of its divisors is an integer number (5263860).

Almost surely, 2^64953785 is an apocalyptic number.

64953785 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

64953785 is a deficient number, since it is larger than the sum of its proper divisors (19267975).

64953785 is a wasteful number, since it uses less digits than its factorization.

64953785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3368.

The product of its digits is 907200, while the sum is 47.

The square root of 64953785 is about 8059.3911060328. The cubic root of 64953785 is about 401.9772620655.

The spelling of 64953785 in words is "sixty-four million, nine hundred fifty-three thousand, seven hundred eighty-five".