648605134 has 4 divisors (see below), whose sum is σ = 972907704. Its totient is φ = 324302566.

The previous prime is 648605107. The next prime is 648605171. The reversal of 648605134 is 431506846.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 648605093 and 648605102.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 162151282 + ... + 162151285.

It is an arithmetic number, because the mean of its divisors is an integer number (243226926).

Almost surely, 2^648605134 is an apocalyptic number.

648605134 is a deficient number, since it is larger than the sum of its proper divisors (324302570).

648605134 is a wasteful number, since it uses less digits than its factorization.

648605134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 324302569.

The product of its (nonzero) digits is 69120, while the sum is 37.

The square root of 648605134 is about 25467.7273033932. The cubic root of 648605134 is about 865.6190269742.

The spelling of 648605134 in words is "six hundred forty-eight million, six hundred five thousand, one hundred thirty-four".