787861956 has 24 divisors (see below), whose sum is σ = 2100965440. Its totient is φ = 225103392.

The previous prime is 787861951. The next prime is 787861969. The reversal of 787861956 is 659168787.

It is a junction number, because it is equal to n+sod(n) for n = 787861896 and 787861905.

It is not an unprimeable number, because it can be changed into a prime (787861951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4689571 + ... + 4689738.

Almost surely, 2^787861956 is an apocalyptic number.

It is an amenable number.

787861956 is an abundant number, since it is smaller than the sum of its proper divisors (1313103484).

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

787861956 is a wasteful number, since it uses less digits than its factorization.

787861956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9379323 (or 9379321 counting only the distinct ones).

The product of its digits is 5080320, while the sum is 57.

The square root of 787861956 is about 28068.8787805997. The cubic root of 787861956 is about 923.5988354316.

The spelling of 787861956 in words is "seven hundred eighty-seven million, eight hundred sixty-one thousand, nine hundred fifty-six".