64283901697 has 4 divisors (see below), whose sum is σ = 64284806916. Its totient is φ = 64282996480.

The previous prime is 64283901691. The next prime is 64283901701. The reversal of 64283901697 is 79610938246.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 18694819441 + 45589082256 = 136729^2 + 213516^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64283901697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64283901691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 336088 + ... + 491449.

It is an arithmetic number, because the mean of its divisors is an integer number (16071201729).

Almost surely, 2^64283901697 is an apocalyptic number.

It is an amenable number.

64283901697 is a deficient number, since it is larger than the sum of its proper divisors (905219).

64283901697 is an equidigital number, since it uses as much as digits as its factorization.

64283901697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 905218.

The product of its (nonzero) digits is 3919104, while the sum is 55.

The spelling of 64283901697 in words is "sixty-four billion, two hundred eighty-three million, nine hundred one thousand, six hundred ninety-seven".