64436007 has 4 divisors (see below), whose sum is σ = 85914680. Its totient is φ = 42957336.

The previous prime is 64436003. The next prime is 64436023. The reversal of 64436007 is 70063446.

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

It is not a de Polignac number, because 64436007 - 2² = 64436003 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64436003) 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, 10739332 + ... + 10739337.

It is an arithmetic number, because the mean of its divisors is an integer number (21478670).

Almost surely, 2^64436007 is an apocalyptic number.

64436007 is a deficient number, since it is larger than the sum of its proper divisors (21478673).

64436007 is a wasteful number, since it uses less digits than its factorization.

64436007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21478672.

The product of its (nonzero) digits is 12096, while the sum is 30.

The square root of 64436007 is about 8027.2041832758. The cubic root of 64436007 is about 400.9062929486.

The spelling of 64436007 in words is "sixty-four million, four hundred thirty-six thousand, seven".