427661706646 has 8 divisors (see below), whose sum is σ = 643108411440. Its totient is φ = 213292236168.

The previous prime is 427661706583. The next prime is 427661706673. The reversal of 427661706646 is 646607166724.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 269307586 + ... + 269309173.

It is an arithmetic number, because the mean of its divisors is an integer number (80388551430).

Almost surely, 2^427661706646 is an apocalyptic number.

427661706646 is a deficient number, since it is larger than the sum of its proper divisors (215446704794).

427661706646 is a wasteful number, since it uses less digits than its factorization.

427661706646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 538617158.

The product of its (nonzero) digits is 12192768, while the sum is 55.

The spelling of 427661706646 in words is "four hundred twenty-seven billion, six hundred sixty-one million, seven hundred six thousand, six hundred forty-six".