6764778280 has 64 divisors (see below), whose sum is σ = 16636314240. Its totient is φ = 2460471552.

The previous prime is 6764778269. The next prime is 6764778301. The reversal of 6764778280 is 828774676.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62244 + ... + 131923.

It is an arithmetic number, because the mean of its divisors is an integer number (259942410).

Almost surely, 2^6764778280 is an apocalyptic number.

It is an amenable number.

6764778280 is an abundant number, since it is smaller than the sum of its proper divisors (9871535960).

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

6764778280 is a wasteful number, since it uses less digits than its factorization.

6764778280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194258 (or 194254 counting only the distinct ones).

The product of its (nonzero) digits is 6322176, while the sum is 55.

The square root of 6764778280 is about 82248.2722006973. The cubic root of 6764778280 is about 1891.2597892295.

The spelling of 6764778280 in words is "six billion, seven hundred sixty-four million, seven hundred seventy-eight thousand, two hundred eighty".