64563407 has 4 divisors (see below), whose sum is σ = 64580040. Its totient is φ = 64546776.

The previous prime is 64563391. The next prime is 64563413. The reversal of 64563407 is 70436546.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 70436546 = 2 ⋅35218273.

It is a cyclic number.

It is not a de Polignac number, because 64563407 - 2⁴ = 64563391 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 (64533407) 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, 944 + ... + 11402.

It is an arithmetic number, because the mean of its divisors is an integer number (16145010).

Almost surely, 2^64563407 is an apocalyptic number.

64563407 is a deficient number, since it is larger than the sum of its proper divisors (16633).

64563407 is a wasteful number, since it uses less digits than its factorization.

64563407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16632.

The product of its (nonzero) digits is 60480, while the sum is 35.

The square root of 64563407 is about 8035.1357798111. The cubic root of 64563407 is about 401.1703370219.

The spelling of 64563407 in words is "sixty-four million, five hundred sixty-three thousand, four hundred seven".