64066406 has 16 divisors (see below), whose sum is σ = 98157744. Its totient is φ = 31353984.

The previous prime is 64066403. The next prime is 64066411. The reversal of 64066406 is 60466046.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64066403) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18401 + ... + 21603.

It is an arithmetic number, because the mean of its divisors is an integer number (6134859).

Almost surely, 2^64066406 is an apocalyptic number.

64066406 is a deficient number, since it is larger than the sum of its proper divisors (34091338).

64066406 is a wasteful number, since it uses less digits than its factorization.

64066406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3415.

The product of its (nonzero) digits is 20736, while the sum is 32.

The square root of 64066406 is about 8004.1492989574. The cubic root of 64066406 is about 400.1382980120.

The spelling of 64066406 in words is "sixty-four million, sixty-six thousand, four hundred six".