712776643 has 16 divisors (see below), whose sum is σ = 744198400. Its totient is φ = 682123680.

The previous prime is 712776641. The next prime is 712776671. The reversal of 712776643 is 346677217.

It is a cyclic number.

It is not a de Polignac number, because 712776643 - 2¹ = 712776641 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 712776643.

It is not an unprimeable number, because it can be changed into a prime (712776641) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1151188 + ... + 1151806.

It is an arithmetic number, because the mean of its divisors is an integer number (46512400).

Almost surely, 2^712776643 is an apocalyptic number.

712776643 is a deficient number, since it is larger than the sum of its proper divisors (31421757).

712776643 is a wasteful number, since it uses less digits than its factorization.

712776643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1162.

The product of its digits is 296352, while the sum is 43.

The square root of 712776643 is about 26697.8771253446. The cubic root of 712776643 is about 893.2735746423.

The spelling of 712776643 in words is "seven hundred twelve million, seven hundred seventy-six thousand, six hundred forty-three".