64243007 has 4 divisors (see below), whose sum is σ = 64403616. Its totient is φ = 64082400.

The previous prime is 64242991. The next prime is 64243021. The reversal of 64243007 is 70034246.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 64243007 - 2⁴ = 64242991 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 (64243087) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 79703 + ... + 80504.

It is an arithmetic number, because the mean of its divisors is an integer number (16100904).

Almost surely, 2^64243007 is an apocalyptic number.

64243007 is a deficient number, since it is larger than the sum of its proper divisors (160609).

64243007 is a wasteful number, since it uses less digits than its factorization.

64243007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160608.

The product of its (nonzero) digits is 4032, while the sum is 26.

The square root of 64243007 is about 8015.1735477156. The cubic root of 64243007 is about 400.5056251720.

The spelling of 64243007 in words is "sixty-four million, two hundred forty-three thousand, seven".