712778 has 16 divisors (see below), whose sum is σ = 1179360. Its totient is φ = 320400.

The previous prime is 712739. The next prime is 712781. The reversal of 712778 is 877217.

It is an unprimeable number.

712778 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, 3848 + ... + 4028.

It is an arithmetic number, because the mean of its divisors is an integer number (73710).

2⁷¹²⁷⁷⁸ is an apocalyptic number.

712778 is a deficient number, since it is larger than the sum of its proper divisors (466582).

712778 is a wasteful number, since it uses less digits than its factorization.

712778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 373.

The product of its digits is 5488, while the sum is 32.

The square root of 712778 is about 844.2618077350. The cubic root of 712778 is about 89.3274141520.

The spelling of 712778 in words is "seven hundred twelve thousand, seven hundred seventy-eight".