64545606 has 32 divisors (see below), whose sum is σ = 143740800. Its totient is φ = 21469320.

The previous prime is 64545601. The next prime is 64545631. The reversal of 64545606 is 60654546.

It is a happy number.

64545606 is a `hidden beast` number, since 6 + 4 + 5 + 45 + 606 = 666.

It is a super-2 number, since 2×64545606² = 8332270507814472, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64545601) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32461 + ... + 34391.

It is an arithmetic number, because the mean of its divisors is an integer number (4491900).

Almost surely, 2^64545606 is an apocalyptic number.

64545606 is an abundant number, since it is smaller than the sum of its proper divisors (79195194).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64545606 is a wasteful number, since it uses less digits than its factorization.

64545606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2561 (or 2555 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 36.

The square root of 64545606 is about 8034.0280059258. The cubic root of 64545606 is about 401.1334642797.

The spelling of 64545606 in words is "sixty-four million, five hundred forty-five thousand, six hundred six".