648698252 has 12 divisors (see below), whose sum is σ = 1142453760. Its totient is φ = 322282896.

The previous prime is 648698249. The next prime is 648698261. The reversal of 648698252 is 252896846.

It is a self number, because there is not a number n which added to its sum of digits gives 648698252.

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, 515852 + ... + 517107.

It is an arithmetic number, because the mean of its divisors is an integer number (95204480).

Almost surely, 2^648698252 is an apocalyptic number.

It is an amenable number.

648698252 is a deficient number, since it is larger than the sum of its proper divisors (493755508).

648698252 is a wasteful number, since it uses less digits than its factorization.

648698252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1033120 (or 1033118 counting only the distinct ones).

The product of its digits is 1658880, while the sum is 50.

The square root of 648698252 is about 25469.5553946275. Note that the first 3 decimals coincide. The cubic root of 648698252 is about 865.6604496371.

The spelling of 648698252 in words is "six hundred forty-eight million, six hundred ninety-eight thousand, two hundred fifty-two".