648068760 has 48 divisors (see below), whose sum is σ = 2106224640. Its totient is φ = 172818240.

The previous prime is 648068749. The next prime is 648068761. The reversal of 648068760 is 67860846.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (648068761) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 899736 + ... + 900455.

It is an arithmetic number, because the mean of its divisors is an integer number (43879680).

Almost surely, 2^648068760 is an apocalyptic number.

648068760 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

648068760 is an abundant number, since it is smaller than the sum of its proper divisors (1458155880).

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

648068760 is a wasteful number, since it uses less digits than its factorization.

648068760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1800208 (or 1800201 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 45.

The square root of 648068760 is about 25457.1946608420. The cubic root of 648068760 is about 865.3803488428.

The spelling of 648068760 in words is "six hundred forty-eight million, sixty-eight thousand, seven hundred sixty".