648457626 has 16 divisors (see below), whose sum is σ = 1315182528. Its totient is φ = 213108000.

The previous prime is 648457573. The next prime is 648457651. The reversal of 648457626 is 626754846.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 760675 + ... + 761526.

It is an arithmetic number, because the mean of its divisors is an integer number (82198908).

Almost surely, 2^648457626 is an apocalyptic number.

648457626 is an abundant number, since it is smaller than the sum of its proper divisors (666724902).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

648457626 is a wasteful number, since it uses less digits than its factorization.

648457626 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1522277.

The product of its digits is 1935360, while the sum is 48.

The square root of 648457626 is about 25464.8311598565. The cubic root of 648457626 is about 865.5534013182.

The spelling of 648457626 in words is "six hundred forty-eight million, four hundred fifty-seven thousand, six hundred twenty-six".