64565101 has 4 divisors (see below), whose sum is σ = 64607872. Its totient is φ = 64522332.

The previous prime is 64565051. The next prime is 64565131. The reversal of 64565101 is 10156546.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 10156546 = 2 ⋅5078273.

It is a cyclic number.

It is not a de Polignac number, because 64565101 - 2¹³ = 64556909 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 64565101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64565131) 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 3 ways as a sum of consecutive naturals, for example, 19035 + ... + 22168.

It is an arithmetic number, because the mean of its divisors is an integer number (16151968).

Almost surely, 2^64565101 is an apocalyptic number.

It is an amenable number.

64565101 is a deficient number, since it is larger than the sum of its proper divisors (42771).

64565101 is a wasteful number, since it uses less digits than its factorization.

64565101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42770.

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 64565101 is about 8035.2411911529. The cubic root of 64565101 is about 401.1738455966.

The spelling of 64565101 in words is "sixty-four million, five hundred sixty-five thousand, one hundred one".