648633914 has 16 divisors (see below), whose sum is σ = 978436800. Its totient is φ = 322494144.

The previous prime is 648633911. The next prime is 648633977. The reversal of 648633914 is 419336846.

It is not an unprimeable number, because it can be changed into a prime (648633911) 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, 303602 + ... + 305730.

It is an arithmetic number, because the mean of its divisors is an integer number (61152300).

Almost surely, 2^648633914 is an apocalyptic number.

648633914 is a deficient number, since it is larger than the sum of its proper divisors (329802886).

648633914 is a wasteful number, since it uses less digits than its factorization.

648633914 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2917.

The product of its digits is 373248, while the sum is 44.

The square root of 648633914 is about 25468.2923259491. The cubic root of 648633914 is about 865.6318299087.

The spelling of 648633914 in words is "six hundred forty-eight million, six hundred thirty-three thousand, nine hundred fourteen".