1678122760 has 32 divisors (see below), whose sum is σ = 3799839960. Its totient is φ = 666971136.

The previous prime is 1678122709. The next prime is 1678122767. The reversal of 1678122760 is 672218761.

It can be written as a sum of positive squares in 4 ways, for example, as 1585154596 + 92968164 = 39814^2 + 9642^2 .

It is a Harshad number since it is a multiple of its sum of digits (40).

It is not an unprimeable number, because it can be changed into a prime (1678122767) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 127329 + ... + 139888.

Almost surely, 2^1678122760 is an apocalyptic number.

1678122760 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1678122760 is an abundant number, since it is smaller than the sum of its proper divisors (2121717200).

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

1678122760 is a wasteful number, since it uses less digits than its factorization.

1678122760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267385 (or 267381 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 40.

The square root of 1678122760 is about 40964.8966799625. The cubic root of 1678122760 is about 1188.3414410807.

The spelling of 1678122760 in words is "one billion, six hundred seventy-eight million, one hundred twenty-two thousand, seven hundred sixty".