648897442 has 8 divisors (see below), whose sum is σ = 977711616. Its totient is φ = 322993572.

The previous prime is 648897437. The next prime is 648897449. The reversal of 648897442 is 244798846.

648897442 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a self number, because there is not a number n which added to its sum of digits gives 648897442.

It is not an unprimeable number, because it can be changed into a prime (648897449) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 727018 + ... + 727909.

It is an arithmetic number, because the mean of its divisors is an integer number (122213952).

Almost surely, 2^648897442 is an apocalyptic number.

648897442 is a deficient number, since it is larger than the sum of its proper divisors (328814174).

648897442 is a wasteful number, since it uses less digits than its factorization.

648897442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1455152.

The product of its digits is 3096576, while the sum is 52.

The square root of 648897442 is about 25473.4654493651. The cubic root of 648897442 is about 865.7490441203.

The spelling of 648897442 in words is "six hundred forty-eight million, eight hundred ninety-seven thousand, four hundred forty-two".