787871580 has 48 divisors (see below), whose sum is σ = 2259853344. Its totient is φ = 204974080.

The previous prime is 787871573. The next prime is 787871587. The reversal of 787871580 is 85178787.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (787871573) and next prime (787871587).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (787871587) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 157677 + ... + 162596.

It is an arithmetic number, because the mean of its divisors is an integer number (47080278).

Almost surely, 2^787871580 is an apocalyptic number.

It is an amenable number.

787871580 is an abundant number, since it is smaller than the sum of its proper divisors (1471981764).

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

787871580 is a wasteful number, since it uses less digits than its factorization.

787871580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 320326 (or 320324 counting only the distinct ones).

The product of its (nonzero) digits is 878080, while the sum is 51.

The square root of 787871580 is about 28069.0502154954. The cubic root of 787871580 is about 923.6025961069.

The spelling of 787871580 in words is "seven hundred eighty-seven million, eight hundred seventy-one thousand, five hundred eighty".