780789996 has 96 divisors (see below), whose sum is σ = 2351516160. Its totient is φ = 219412800.

The previous prime is 780789983. The next prime is 780790007. The reversal of 780789996 is 699987087.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 37651 + ... + 54581.

It is an arithmetic number, because the mean of its divisors is an integer number (24494960).

Almost surely, 2^780789996 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 780789996, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1175758080).

780789996 is an abundant number, since it is smaller than the sum of its proper divisors (1570726164).

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

780789996 is a wasteful number, since it uses less digits than its factorization.

780789996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17012 (or 17004 counting only the distinct ones).

The product of its (nonzero) digits is 13716864, while the sum is 63.

The square root of 780789996 is about 27942.6197053891. The cubic root of 780789996 is about 920.8270744527.

The spelling of 780789996 in words is "seven hundred eighty million, seven hundred eighty-nine thousand, nine hundred ninety-six".