780677016 has 96 divisors (see below), whose sum is σ = 2389896000. Its totient is φ = 211305024.

The previous prime is 780676993. The next prime is 780677039. The reversal of 780677016 is 610776087.

It is an interprime number because it is at equal distance from previous prime (780676993) and next prime (780677039).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4875 + ... + 39813.

It is an arithmetic number, because the mean of its divisors is an integer number (24894750).

Almost surely, 2^780677016 is an apocalyptic number.

780677016 is a gapful number since it is divisible by the number (76) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 780677016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1194948000).

780677016 is an abundant number, since it is smaller than the sum of its proper divisors (1609218984).

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

780677016 is a wasteful number, since it uses less digits than its factorization.

780677016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34981 (or 34970 counting only the distinct ones).

The product of its (nonzero) digits is 98784, while the sum is 42.

The square root of 780677016 is about 27940.5979893058. The cubic root of 780677016 is about 920.7826578739.

The spelling of 780677016 in words is "seven hundred eighty million, six hundred seventy-seven thousand, sixteen".