712635649 has 4 divisors (see below), whose sum is σ = 777420720. Its totient is φ = 647850580.

The previous prime is 712635643. The next prime is 712635659. The reversal of 712635649 is 946536217.

712635649 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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.

It is a cyclic number.

It is not a de Polignac number, because 712635649 - 2⁹ = 712635137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (712635643) 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, 32392519 + ... + 32392540.

It is an arithmetic number, because the mean of its divisors is an integer number (194355180).

Almost surely, 2^712635649 is an apocalyptic number.

It is an amenable number.

712635649 is a deficient number, since it is larger than the sum of its proper divisors (64785071).

712635649 is a wasteful number, since it uses less digits than its factorization.

712635649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64785070.

The product of its digits is 272160, while the sum is 43.

The square root of 712635649 is about 26695.2364477260. The cubic root of 712635649 is about 893.2146714216.

The spelling of 712635649 in words is "seven hundred twelve million, six hundred thirty-five thousand, six hundred forty-nine".