712007778 has 16 divisors (see below), whose sum is σ = 1425013056. Its totient is φ = 237169680.

The previous prime is 712007771. The next prime is 712007801. The reversal of 712007778 is 877700217.

It is not an unprimeable number, because it can be changed into a prime (712007771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32118 + ... + 49553.

It is an arithmetic number, because the mean of its divisors is an integer number (89063316).

Almost surely, 2^712007778 is an apocalyptic number.

712007778 is an abundant number, since it is smaller than the sum of its proper divisors (713005278).

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

712007778 is a wasteful number, since it uses less digits than its factorization.

712007778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83129.

The product of its (nonzero) digits is 38416, while the sum is 39.

The square root of 712007778 is about 26683.4738742916. The cubic root of 712007778 is about 892.9522706769.

The spelling of 712007778 in words is "seven hundred twelve million, seven thousand, seven hundred seventy-eight".