6778597400 has 48 divisors (see below), whose sum is σ = 16126776600. Its totient is φ = 2648378880.

The previous prime is 6778597387. The next prime is 6778597447. The reversal of 6778597400 is 47958776.

It is a super-2 number, since 2×6778597400² = 91898765422573520000, 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 in 11 ways as a sum of consecutive naturals, for example, 385505 + ... + 402704.

Almost surely, 2^6778597400 is an apocalyptic number.

It is an amenable number.

6778597400 is an abundant number, since it is smaller than the sum of its proper divisors (9348179200).

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

6778597400 is a wasteful number, since it uses less digits than its factorization.

6778597400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 788268 (or 788259 counting only the distinct ones).

The product of its (nonzero) digits is 2963520, while the sum is 53.

The square root of 6778597400 is about 82332.2379144403. The cubic root of 6778597400 is about 1892.5467380135.

The spelling of 6778597400 in words is "six billion, seven hundred seventy-eight million, five hundred ninety-seven thousand, four hundred".