647641146746 has 16 divisors (see below), whose sum is σ = 1060111590048. Its totient is φ = 294289237200.

The previous prime is 647641146743. The next prime is 647641146871.

647641146746 is nontrivially palindromic in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 647641146691 and 647641146700.

It is not an unprimeable number, because it can be changed into a prime (647641146743) 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, 4583945 + ... + 4723116.

It is an arithmetic number, because the mean of its divisors is an integer number (66256974378).

Almost surely, 2^647641146746 is an apocalyptic number.

647641146746 is a deficient number, since it is larger than the sum of its proper divisors (412470443302).

647641146746 is a wasteful number, since it uses less digits than its factorization.

647641146746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9310237.

The product of its digits is 16257024, while the sum is 56.

The spelling of 647641146746 in words is "six hundred forty-seven billion, six hundred forty-one million, one hundred forty-six thousand, seven hundred forty-six".