64588465 has 4 divisors (see below), whose sum is σ = 77506164. Its totient is φ = 51670768.

The previous prime is 64588463. The next prime is 64588477. The reversal of 64588465 is 56488546.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 56488546 = 2 ⋅28244273.

It can be written as a sum of positive squares in 2 ways, for example, as 9591409 + 54997056 = 3097^2 + 7416^2 .

It is a cyclic number.

It is not a de Polignac number, because 64588465 - 2¹ = 64588463 is a prime.

It is a super-3 number, since 3×64588465³ (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64588463) 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, 6458842 + ... + 6458851.

It is an arithmetic number, because the mean of its divisors is an integer number (19376541).

Almost surely, 2^64588465 is an apocalyptic number.

It is an amenable number.

64588465 is a deficient number, since it is larger than the sum of its proper divisors (12917699).

64588465 is a wasteful number, since it uses less digits than its factorization.

64588465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12917698.

The product of its digits is 921600, while the sum is 46.

The square root of 64588465 is about 8036.6949052456. The cubic root of 64588465 is about 401.2222303288. Note that the first 4 decimals are identical.

The spelling of 64588465 in words is "sixty-four million, five hundred eighty-eight thousand, four hundred sixty-five".