64365906 has 32 divisors (see below), whose sum is σ = 145281600. Its totient is φ = 18831680.

The previous prime is 64365887. The next prime is 64365923. The reversal of 64365906 is 60956346.

It is a happy number.

64365906 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14901 + ... + 18728.

It is an arithmetic number, because the mean of its divisors is an integer number (4540050).

Almost surely, 2^64365906 is an apocalyptic number.

64365906 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

64365906 is an abundant number, since it is smaller than the sum of its proper divisors (80915694).

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

64365906 is a wasteful number, since it uses less digits than its factorization.

64365906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33674.

The product of its (nonzero) digits is 116640, while the sum is 39.

The square root of 64365906 is about 8022.8365308038. The cubic root of 64365906 is about 400.7608559944.

The spelling of 64365906 in words is "sixty-four million, three hundred sixty-five thousand, nine hundred six".