64466009 has 4 divisors (see below), whose sum is σ = 64676304. Its totient is φ = 64255716.

The previous prime is 64465969. The next prime is 64466021. The reversal of 64466009 is 90066446.

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: 90066446 = 2 ⋅45033223.

It is a cyclic number.

It is not a de Polignac number, because 64466009 - 2¹² = 64461913 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 64466009.

It is not an unprimeable number, because it can be changed into a prime (64466029) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 104687 + ... + 105300.

It is an arithmetic number, because the mean of its divisors is an integer number (16169076).

Almost surely, 2^64466009 is an apocalyptic number.

It is an amenable number.

64466009 is a deficient number, since it is larger than the sum of its proper divisors (210295).

64466009 is a wasteful number, since it uses less digits than its factorization.

64466009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210294.

The product of its (nonzero) digits is 31104, while the sum is 35.

The square root of 64466009 is about 8029.0727360013. The cubic root of 64466009 is about 400.9685051850.

The spelling of 64466009 in words is "sixty-four million, four hundred sixty-six thousand, nine".