648254719 has 16 divisors (see below), whose sum is σ = 773467200. Its totient is φ = 531546624.

The previous prime is 648254707. The next prime is 648254741. The reversal of 648254719 is 917452846.

It is not a de Polignac number, because 648254719 - 2⁵ = 648254687 is a prime.

It is a super-2 number, since 2×648254719² = 840468361411537922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (648254759) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7479 + ... + 36775.

It is an arithmetic number, because the mean of its divisors is an integer number (48341700).

Almost surely, 2^648254719 is an apocalyptic number.

648254719 is a deficient number, since it is larger than the sum of its proper divisors (125212481).

648254719 is a wasteful number, since it uses less digits than its factorization.

648254719 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29442.

The product of its digits is 483840, while the sum is 46.

The square root of 648254719 is about 25460.8467848184. The cubic root of 648254719 is about 865.4631126299.

The spelling of 648254719 in words is "six hundred forty-eight million, two hundred fifty-four thousand, seven hundred nineteen".