64650700801 has 8 divisors (see below), whose sum is σ = 66244041864. Its totient is φ = 63058145280.

The previous prime is 64650700739. The next prime is 64650700823. The reversal of 64650700801 is 10800705646.

It can be written as a sum of positive squares in 4 ways, for example, as 463971600 + 64186729201 = 21540^2 + 253351^2 .

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 64650700801 - 2¹⁷ = 64650569729 is a prime.

It is a super-2 number, since 2×64650700801² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64650700501) 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 7 ways as a sum of consecutive naturals, for example, 28000 + ... + 360673.

It is an arithmetic number, because the mean of its divisors is an integer number (8280505233).

Almost surely, 2^64650700801 is an apocalyptic number.

It is an amenable number.

64650700801 is a deficient number, since it is larger than the sum of its proper divisors (1593341063).

64650700801 is a wasteful number, since it uses less digits than its factorization.

64650700801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 392771.

The product of its (nonzero) digits is 40320, while the sum is 37.

The spelling of 64650700801 in words is "sixty-four billion, six hundred fifty million, seven hundred thousand, eight hundred one".