648760088 has 8 divisors (see below), whose sum is σ = 1216425180. Its totient is φ = 324380040.

The previous prime is 648760081. The next prime is 648760093. The reversal of 648760088 is 880067846.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (648760081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40547498 + ... + 40547513.

Almost surely, 2^648760088 is an apocalyptic number.

It is an amenable number.

648760088 is a deficient number, since it is larger than the sum of its proper divisors (567665092).

648760088 is a wasteful number, since it uses less digits than its factorization.

648760088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81095017 (or 81095013 counting only the distinct ones).

The product of its (nonzero) digits is 516096, while the sum is 47.

The square root of 648760088 is about 25470.7692855948. The cubic root of 648760088 is about 865.6879546076.

The spelling of 648760088 in words is "six hundred forty-eight million, seven hundred sixty thousand, eighty-eight".