648652508 has 24 divisors (see below), whose sum is σ = 1299733344. Its totient is φ = 277473600.

The previous prime is 648652507. The next prime is 648652517. The reversal of 648652508 is 805256846.

It is a super-2 number, since 2×648652508² = 841500152269380128, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (648652507) 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, 6263 + ... + 36558.

It is an arithmetic number, because the mean of its divisors is an integer number (54155556).

Almost surely, 2^648652508 is an apocalyptic number.

It is an amenable number.

648652508 is an abundant number, since it is smaller than the sum of its proper divisors (651080836).

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

648652508 is a wasteful number, since it uses less digits than its factorization.

648652508 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43373 (or 43371 counting only the distinct ones).

The product of its (nonzero) digits is 460800, while the sum is 44.

The square root of 648652508 is about 25468.6573654757. The cubic root of 648652508 is about 865.6401013461.

The spelling of 648652508 in words is "six hundred forty-eight million, six hundred fifty-two thousand, five hundred eight".