646012923 has 8 divisors (see below), whose sum is σ = 861537600. Its totient is φ = 430581768.

The previous prime is 646012921. The next prime is 646012931. The reversal of 646012923 is 329210646.

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

It is not a de Polignac number, because 646012923 - 2¹ = 646012921 is a prime.

It is not an unprimeable number, because it can be changed into a prime (646012921) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5253 + ... + 36326.

It is an arithmetic number, because the mean of its divisors is an integer number (107692200).

Almost surely, 2^646012923 is an apocalyptic number.

646012923 is a deficient number, since it is larger than the sum of its proper divisors (215524677).

646012923 is a wasteful number, since it uses less digits than its factorization.

646012923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46761.

The product of its (nonzero) digits is 15552, while the sum is 33.

The square root of 646012923 is about 25416.7842773235. The cubic root of 646012923 is about 864.4643115315.

The spelling of 646012923 in words is "six hundred forty-six million, twelve thousand, nine hundred twenty-three".