648179497 has 6 divisors (see below), whose sum is σ = 754004778. Its totient is φ = 555582384.

The previous prime is 648179489. The next prime is 648179501. The reversal of 648179497 is 794971846.

648179497 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 557148816 + 91030681 = 23604^2 + 9541^2 .

It is not a de Polignac number, because 648179497 - 2³ = 648179489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (648189497) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6614028 + ... + 6614125.

It is an arithmetic number, because the mean of its divisors is an integer number (125667463).

Almost surely, 2^648179497 is an apocalyptic number.

It is an amenable number.

648179497 is a deficient number, since it is larger than the sum of its proper divisors (105825281).

648179497 is a wasteful number, since it uses less digits than its factorization.

648179497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13228167 (or 13228160 counting only the distinct ones).

The product of its digits is 3048192, while the sum is 55.

The square root of 648179497 is about 25459.3695326495. The cubic root of 648179497 is about 865.4296358793.

The spelling of 648179497 in words is "six hundred forty-eight million, one hundred seventy-nine thousand, four hundred ninety-seven".