648424730 has 8 divisors (see below), whose sum is σ = 1167164532. Its totient is φ = 259369888.

The previous prime is 648424709. The next prime is 648424813. The reversal of 648424730 is 37424846.

It can be written as a sum of positive squares in 2 ways, for example, as 640545481 + 7879249 = 25309^2 + 2807^2 .

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

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, 32421227 + ... + 32421246.

Almost surely, 2^648424730 is an apocalyptic number.

648424730 is a deficient number, since it is larger than the sum of its proper divisors (518739802).

648424730 is a wasteful number, since it uses less digits than its factorization.

648424730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64842480.

The product of its (nonzero) digits is 129024, while the sum is 38.

The square root of 648424730 is about 25464.1852412364. The cubic root of 648424730 is about 865.5387646763.

The spelling of 648424730 in words is "six hundred forty-eight million, four hundred twenty-four thousand, seven hundred thirty".