648771662 has 48 divisors (see below), whose sum is σ = 1247156352. Its totient is φ = 250271280.

The previous prime is 648771637. The next prime is 648771667. The reversal of 648771662 is 266177846.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (648771667) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 108113 + ... + 113955.

It is an arithmetic number, because the mean of its divisors is an integer number (25982424).

Almost surely, 2^648771662 is an apocalyptic number.

648771662 is a deficient number, since it is larger than the sum of its proper divisors (598384690).

648771662 is a wasteful number, since it uses less digits than its factorization.

648771662 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5973 (or 5966 counting only the distinct ones).

The product of its digits is 677376, while the sum is 47.

The square root of 648771662 is about 25470.9964861997. The cubic root of 648771662 is about 865.6931025881.

The spelling of 648771662 in words is "six hundred forty-eight million, seven hundred seventy-one thousand, six hundred sixty-two".