780661016 has 8 divisors (see below), whose sum is σ = 1463739420. Its totient is φ = 390330504.

The previous prime is 780660977. The next prime is 780661061. The reversal of 780661016 is 610166087.

780661016 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48791306 + ... + 48791321.

Almost surely, 2^780661016 is an apocalyptic number.

It is an amenable number.

780661016 is a deficient number, since it is larger than the sum of its proper divisors (683078404).

780661016 is a wasteful number, since it uses less digits than its factorization.

780661016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97582633 (or 97582629 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 780661016 is about 27940.3116661214. The cubic root of 780661016 is about 920.7763673411.

The spelling of 780661016 in words is "seven hundred eighty million, six hundred sixty-one thousand, sixteen".