6761615820 has 48 divisors (see below), whose sum is σ = 19070741088. Its totient is φ = 1789934080.

The previous prime is 6761615771. The next prime is 6761615851. The reversal of 6761615820 is 285161676.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 403071 + ... + 419510.

It is an arithmetic number, because the mean of its divisors is an integer number (397307106).

Almost surely, 2^6761615820 is an apocalyptic number.

6761615820 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6761615820 is an abundant number, since it is smaller than the sum of its proper divisors (12309125268).

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

6761615820 is a wasteful number, since it uses less digits than its factorization.

6761615820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 822730 (or 822728 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 42.

The square root of 6761615820 is about 82229.0448685864. The cubic root of 6761615820 is about 1890.9650288570.

It can be divided in two parts, 67616 and 15820, that added together give a triangular number (83436 = T₄₀₈).

The spelling of 6761615820 in words is "six billion, seven hundred sixty-one million, six hundred fifteen thousand, eight hundred twenty".