648998051 has 8 divisors (see below), whose sum is σ = 721467264. Its totient is φ = 579749760.

The previous prime is 648998041. The next prime is 648998059. The reversal of 648998051 is 150899846.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 648998051 - 2¹⁴ = 648981667 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (648998059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 804806 + ... + 805611.

It is an arithmetic number, because the mean of its divisors is an integer number (90183408).

Almost surely, 2^648998051 is an apocalyptic number.

648998051 is a deficient number, since it is larger than the sum of its proper divisors (72469213).

648998051 is a wasteful number, since it uses less digits than its factorization.

648998051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1610461.

The product of its (nonzero) digits is 622080, while the sum is 50.

The square root of 648998051 is about 25475.4401532142. The cubic root of 648998051 is about 865.7937854711.

The spelling of 648998051 in words is "six hundred forty-eight million, nine hundred ninety-eight thousand, fifty-one".