648081763 has 8 divisors (see below), whose sum is σ = 766205280. Its totient is φ = 536343360.

The previous prime is 648081761. The next prime is 648081817. The reversal of 648081763 is 367180846.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 648081763 - 2¹ = 648081761 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (648081761) 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, 1596058 + ... + 1596463.

It is an arithmetic number, because the mean of its divisors is an integer number (95775660).

Almost surely, 2^648081763 is an apocalyptic number.

648081763 is a deficient number, since it is larger than the sum of its proper divisors (118123517).

648081763 is a wasteful number, since it uses less digits than its factorization.

648081763 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3192557.

The product of its (nonzero) digits is 193536, while the sum is 43.

The square root of 648081763 is about 25457.4500490524. The cubic root of 648081763 is about 865.3861365339.

The spelling of 648081763 in words is "six hundred forty-eight million, eighty-one thousand, seven hundred sixty-three".