64646463 has 16 divisors (see below), whose sum is σ = 100912896. Its totient is φ = 36039360.

The previous prime is 64646453. The next prime is 64646473. The reversal of 64646463 is 36464646.

It is an interprime number because it is at equal distance from previous prime (64646453) and next prime (64646473).

It is not a de Polignac number, because 64646463 - 2⁵ = 64646431 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64646443) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36681 + ... + 38402.

It is an arithmetic number, because the mean of its divisors is an integer number (6307056).

Almost surely, 2^64646463 is an apocalyptic number.

64646463 is a deficient number, since it is larger than the sum of its proper divisors (36266433).

64646463 is a wasteful number, since it uses less digits than its factorization.

64646463 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75134.

The product of its digits is 248832, while the sum is 39.

The square root of 64646463 is about 8040.3024196855. The cubic root of 64646463 is about 401.3422885320.

The spelling of 64646463 in words is "sixty-four million, six hundred forty-six thousand, four hundred sixty-three".