646073463 has 16 divisors (see below), whose sum is σ = 984948480. Its totient is φ = 369014016.

The previous prime is 646073443. The next prime is 646073479. The reversal of 646073463 is 364370646.

It is not a de Polignac number, because 646073463 - 2⁵ = 646073431 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (646073413) 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, 50008 + ... + 61586.

It is an arithmetic number, because the mean of its divisors is an integer number (61559280).

Almost surely, 2^646073463 is an apocalyptic number.

646073463 is a deficient number, since it is larger than the sum of its proper divisors (338875017).

646073463 is a wasteful number, since it uses less digits than its factorization.

646073463 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14246.

The product of its (nonzero) digits is 217728, while the sum is 39.

The square root of 646073463 is about 25417.9751947318. The cubic root of 646073463 is about 864.4913146212.

The spelling of 646073463 in words is "six hundred forty-six million, seventy-three thousand, four hundred sixty-three".