648872782 has 8 divisors (see below), whose sum is σ = 973548576. Its totient is φ = 324356592.

The previous prime is 648872773. The next prime is 648872789. The reversal of 648872782 is 287278846.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (648872789) 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, 29158 + ... + 46345.

It is an arithmetic number, because the mean of its divisors is an integer number (121693572).

Almost surely, 2^648872782 is an apocalyptic number.

648872782 is a deficient number, since it is larger than the sum of its proper divisors (324675794).

648872782 is a wasteful number, since it uses less digits than its factorization.

648872782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79802.

The product of its digits is 2408448, while the sum is 52.

The square root of 648872782 is about 25472.9814116840. The cubic root of 648872782 is about 865.7380769830.

The spelling of 648872782 in words is "six hundred forty-eight million, eight hundred seventy-two thousand, seven hundred eighty-two".