712878640 has 40 divisors (see below), whose sum is σ = 1658554560. Its totient is φ = 284960256.

The previous prime is 712878623. The next prime is 712878641. The reversal of 712878640 is 46878217.

712878640 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 (40).

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (712878641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 227001 + ... + 230119.

It is an arithmetic number, because the mean of its divisors is an integer number (41463864).

Almost surely, 2^712878640 is an apocalyptic number.

It is an amenable number.

712878640 is an abundant number, since it is smaller than the sum of its proper divisors (945675920).

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

712878640 is a wasteful number, since it uses less digits than its factorization.

712878640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5989 (or 5983 counting only the distinct ones).

The product of its (nonzero) digits is 150528, while the sum is 43.

The square root of 712878640 is about 26699.7872650701. The cubic root of 712878640 is about 893.3161812008.

The spelling of 712878640 in words is "seven hundred twelve million, eight hundred seventy-eight thousand, six hundred forty".