712288991 has 4 divisors (see below), whose sum is σ = 712344984. Its totient is φ = 712233000.

The previous prime is 712288979. The next prime is 712289027. The reversal of 712288991 is 199882217.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 712288991 - 2¹⁰ = 712287967 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (712188991) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1316 + ... + 37766.

It is an arithmetic number, because the mean of its divisors is an integer number (178086246).

Almost surely, 2^712288991 is an apocalyptic number.

712288991 is a deficient number, since it is larger than the sum of its proper divisors (55993).

712288991 is a wasteful number, since it uses less digits than its factorization.

712288991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55992.

The product of its digits is 145152, while the sum is 47.

The square root of 712288991 is about 26688.7427766840. The cubic root of 712288991 is about 893.0698146807.

The spelling of 712288991 in words is "seven hundred twelve million, two hundred eighty-eight thousand, nine hundred ninety-one".