648559652 has 12 divisors (see below), whose sum is σ = 1222285596. Its totient is φ = 299335200.

The previous prime is 648559651. The next prime is 648559687. The reversal of 648559652 is 256955846.

It can be written as a sum of positive squares in 2 ways, for example, as 140327716 + 508231936 = 11846^2 + 22544^2 .

It is a super-2 number, since 2×648559652² = 841259244404722208, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 648559652.

It is not an unprimeable number, because it can be changed into a prime (648559651) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6236099 + ... + 6236202.

It is an arithmetic number, because the mean of its divisors is an integer number (101857133).

Almost surely, 2^648559652 is an apocalyptic number.

It is an amenable number.

648559652 is a deficient number, since it is larger than the sum of its proper divisors (573725944).

648559652 is a wasteful number, since it uses less digits than its factorization.

648559652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12472318 (or 12472316 counting only the distinct ones).

The product of its digits is 2592000, while the sum is 50.

The square root of 648559652 is about 25466.8343537237. The cubic root of 648559652 is about 865.5987932949.

The spelling of 648559652 in words is "six hundred forty-eight million, five hundred fifty-nine thousand, six hundred fifty-two".