647424746 has 32 divisors (see below), whose sum is σ = 1028923776. Its totient is φ = 304920000.

The previous prime is 647424737. The next prime is 647424749.

647424746 is nontrivially palindromic in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 647424697 and 647424706.

It is not an unprimeable number, because it can be changed into a prime (647424749) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1537616 + ... + 1538036.

It is an arithmetic number, because the mean of its divisors is an integer number (32153868).

Almost surely, 2^647424746 is an apocalyptic number.

647424746 is a deficient number, since it is larger than the sum of its proper divisors (381499030).

647424746 is a wasteful number, since it uses less digits than its factorization.

647424746 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 878.

The product of its digits is 903168, while the sum is 44.

The square root of 647424746 is about 25444.5425582776. The cubic root of 647424746 is about 865.0935985233.

The spelling of 647424746 in words is "six hundred forty-seven million, four hundred twenty-four thousand, seven hundred forty-six".