648652776 has 32 divisors (see below), whose sum is σ = 1627184160. Its totient is φ = 215477312.

The previous prime is 648652757. The next prime is 648652793. The reversal of 648652776 is 677256846.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39090 + ... + 53153.

It is an arithmetic number, because the mean of its divisors is an integer number (50849505).

Almost surely, 2^648652776 is an apocalyptic number.

It is an amenable number.

648652776 is an abundant number, since it is smaller than the sum of its proper divisors (978531384).

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

648652776 is a wasteful number, since it uses less digits than its factorization.

648652776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92545 (or 92541 counting only the distinct ones).

The product of its digits is 3386880, while the sum is 51.

The square root of 648652776 is about 25468.6626268440. The cubic root of 648652776 is about 865.6402205633.

The spelling of 648652776 in words is "six hundred forty-eight million, six hundred fifty-two thousand, seven hundred seventy-six".