6450707768 has 8 divisors (see below), whose sum is σ = 12095077080. Its totient is φ = 3225353880.

The previous prime is 6450707729. The next prime is 6450707777. The reversal of 6450707768 is 8677070546.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×6450707768² = 83223261416271083648, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 403169228 + ... + 403169243.

It is an arithmetic number, because the mean of its divisors is an integer number (1511884635).

Almost surely, 2^6450707768 is an apocalyptic number.

It is an amenable number.

6450707768 is a deficient number, since it is larger than the sum of its proper divisors (5644369312).

6450707768 is a wasteful number, since it uses less digits than its factorization.

6450707768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 806338477 (or 806338473 counting only the distinct ones).

The product of its (nonzero) digits is 1975680, while the sum is 50.

The square root of 6450707768 is about 80316.2982712724. The cubic root of 6450707768 is about 1861.5260694157.

The spelling of 6450707768 in words is "six billion, four hundred fifty million, seven hundred seven thousand, seven hundred sixty-eight".