780134684 has 36 divisors (see below), whose sum is σ = 1642906440. Its totient is φ = 322812000.

The previous prime is 780134671. The next prime is 780134689. The reversal of 780134684 is 486431087.

It is a super-2 number, since 2×780134684² = 1217220250359559712, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (780134689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 62942 + ... + 74309.

It is an arithmetic number, because the mean of its divisors is an integer number (45636290).

Almost surely, 2^780134684 is an apocalyptic number.

It is an amenable number.

780134684 is an abundant number, since it is smaller than the sum of its proper divisors (862771756).

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

780134684 is a wasteful number, since it uses less digits than its factorization.

780134684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137298 (or 137289 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 41.

The square root of 780134684 is about 27930.8912138514. The cubic root of 780134684 is about 920.5693876092.

The spelling of 780134684 in words is "seven hundred eighty million, one hundred thirty-four thousand, six hundred eighty-four".