712978 has 16 divisors (see below), whose sum is σ = 1234944. Its totient is φ = 302400.

The previous prime is 712973. The next prime is 712981. The reversal of 712978 is 879217.

It is not an unprimeable number, because it can be changed into a prime (712973) by changing a digit.

712978 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1578 + ... + 1978.

It is an arithmetic number, because the mean of its divisors is an integer number (77184).

2⁷¹²⁹⁷⁸ is an apocalyptic number.

712978 is a deficient number, since it is larger than the sum of its proper divisors (521966).

712978 is a wasteful number, since it uses less digits than its factorization.

712978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 537.

The product of its digits is 7056, while the sum is 34.

The square root of 712978 is about 844.3802460977. The cubic root of 712978 is about 89.3357682314.

The spelling of 712978 in words is "seven hundred twelve thousand, nine hundred seventy-eight".