712369891 has 6 divisors (see below), whose sum is σ = 737782292. Its totient is φ = 687804600.

The previous prime is 712369849. The next prime is 712369897. The reversal of 712369891 is 198963217.

It is a happy number.

It is not a de Polignac number, because 712369891 - 2¹⁷ = 712238819 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (712369897) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 422685 + ... + 424366.

Almost surely, 2^712369891 is an apocalyptic number.

712369891 is a deficient number, since it is larger than the sum of its proper divisors (25412401).

712369891 is an equidigital number, since it uses as much as digits as its factorization.

712369891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 847109 (or 847080 counting only the distinct ones).

The product of its digits is 163296, while the sum is 46.

The square root of 712369891 is about 26690.2583539388. The cubic root of 712369891 is about 893.1036242785.

The spelling of 712369891 in words is "seven hundred twelve million, three hundred sixty-nine thousand, eight hundred ninety-one".