64434907 has 4 divisors (see below), whose sum is σ = 64461816. Its totient is φ = 64408000.

The previous prime is 64434893. The next prime is 64434911. The reversal of 64434907 is 70943446.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64434907 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64434917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9469 + ... + 14782.

It is an arithmetic number, because the mean of its divisors is an integer number (16115454).

Almost surely, 2^64434907 is an apocalyptic number.

64434907 is a deficient number, since it is larger than the sum of its proper divisors (26909).

64434907 is a wasteful number, since it uses less digits than its factorization.

64434907 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26908.

The product of its (nonzero) digits is 72576, while the sum is 37.

The square root of 64434907 is about 8027.1356659770. The cubic root of 64434907 is about 400.9040116183.

It can be divided in two parts, 64434 and 907, that added together give a triangular number (65341 = T₃₆₁).

The spelling of 64434907 in words is "sixty-four million, four hundred thirty-four thousand, nine hundred seven".