712896621 has 4 divisors (see below), whose sum is σ = 950528832. Its totient is φ = 475264412.

The previous prime is 712896619. The next prime is 712896631. The reversal of 712896621 is 126698217.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 126698217 = 3 ⋅42232739.

It is a cyclic number.

It is not a de Polignac number, because 712896621 - 2¹ = 712896619 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (712896601) 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, 118816101 + ... + 118816106.

It is an arithmetic number, because the mean of its divisors is an integer number (237632208).

Almost surely, 2^712896621 is an apocalyptic number.

It is an amenable number.

712896621 is a deficient number, since it is larger than the sum of its proper divisors (237632211).

712896621 is a wasteful number, since it uses less digits than its factorization.

712896621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237632210.

The product of its digits is 72576, while the sum is 42.

The square root of 712896621 is about 26700.1239884762. The cubic root of 712896621 is about 893.3236918683.

The spelling of 712896621 in words is "seven hundred twelve million, eight hundred ninety-six thousand, six hundred twenty-one".