646264404006 has 16 divisors (see below), whose sum is σ = 1391954101104. Its totient is φ = 198850585824.

The previous prime is 646264403987. The next prime is 646264404011. The reversal of 646264404006 is 600404462646.

It is a super-3 number, since 3×646264404006³ (a number of 36 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4142720461 + ... + 4142720616.

It is an arithmetic number, because the mean of its divisors is an integer number (86997131319).

Almost surely, 2^646264404006 is an apocalyptic number.

646264404006 is an abundant number, since it is smaller than the sum of its proper divisors (745689697098).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

646264404006 is a wasteful number, since it uses less digits than its factorization.

646264404006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8285441095.

The product of its (nonzero) digits is 663552, while the sum is 42.

The spelling of 646264404006 in words is "six hundred forty-six billion, two hundred sixty-four million, four hundred four thousand, six".