64406507 has 8 divisors (see below), whose sum is σ = 70336512. Its totient is φ = 58489000.

The previous prime is 64406473. The next prime is 64406521. The reversal of 64406507 is 70560446.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 64406507 - 2¹⁰ = 64405483 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64406207) 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 7 ways as a sum of consecutive naturals, for example, 10118 + ... + 15204.

It is an arithmetic number, because the mean of its divisors is an integer number (8792064).

Almost surely, 2^64406507 is an apocalyptic number.

64406507 is a deficient number, since it is larger than the sum of its proper divisors (5930005).

64406507 is a wasteful number, since it uses less digits than its factorization.

64406507 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6249.

The product of its (nonzero) digits is 20160, while the sum is 32.

The square root of 64406507 is about 8025.3664713831. The cubic root of 64406507 is about 400.8451028289.

The spelling of 64406507 in words is "sixty-four million, four hundred six thousand, five hundred seven".