6678763730 has 64 divisors (see below), whose sum is σ = 12506708448. Its totient is φ = 2566287360.

The previous prime is 6678763723. The next prime is 6678763733. The reversal of 6678763730 is 373678766.

It can be written as a sum of positive squares in 16 ways, for example, as 784056001 + 5894707729 = 28001^2 + 76777^2 .

It is a super-2 number, since 2×6678763730² = 89211769922327025800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (53).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (6678763733) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10894904 + ... + 10895516.

Almost surely, 2^6678763730 is an apocalyptic number.

6678763730 is a deficient number, since it is larger than the sum of its proper divisors (5827944718).

6678763730 is a wasteful number, since it uses less digits than its factorization.

6678763730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1071.

The product of its (nonzero) digits is 5334336, while the sum is 53.

The square root of 6678763730 is about 81723.7035993842. The cubic root of 6678763730 is about 1883.2097471483.

The spelling of 6678763730 in words is "six billion, six hundred seventy-eight million, seven hundred sixty-three thousand, seven hundred thirty".