648159408 has 400 divisors, whose sum is σ = 2238356736. Its totient is φ = 179159040.

The previous prime is 648159401. The next prime is 648159409. The reversal of 648159408 is 804951846.

It is a super-2 number, since 2×648159408² = 840221236357820928, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (648159401) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 8878860 + ... + 8878932.

Almost surely, 2^648159408 is an apocalyptic number.

648159408 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 648159408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1119178368).

648159408 is an abundant number, since it is smaller than the sum of its proper divisors (1590197328).

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

648159408 is a wasteful number, since it uses less digits than its factorization.

648159408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154 (or 139 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 45.

The square root of 648159408 is about 25458.9749990058. The cubic root of 648159408 is about 865.4206950455.

The spelling of 648159408 in words is "six hundred forty-eight million, one hundred fifty-nine thousand, four hundred eight".