648147498 has 64 divisors (see below), whose sum is σ = 1389975552. Its totient is φ = 201037760.

The previous prime is 648147497. The next prime is 648147499. The reversal of 648147498 is 894741846.

It is an interprime number because it is at equal distance from previous prime (648147497) and next prime (648147499).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 648147498.

It is not an unprimeable number, because it can be changed into a prime (648147497) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 812836 + ... + 813632.

It is an arithmetic number, because the mean of its divisors is an integer number (21718368).

Almost surely, 2^648147498 is an apocalyptic number.

648147498 is an abundant number, since it is smaller than the sum of its proper divisors (741828054).

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

648147498 is a wasteful number, since it uses less digits than its factorization.

648147498 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 979.

The product of its digits is 1548288, while the sum is 51.

The square root of 648147498 is about 25458.7410922064. The cubic root of 648147498 is about 865.4153942797.

The spelling of 648147498 in words is "six hundred forty-eight million, one hundred forty-seven thousand, four hundred ninety-eight".