9726256673 has 4 divisors (see below), whose sum is σ = 11115721920. Its totient is φ = 8336791428.

The previous prime is 9726256651. The next prime is 9726256741. The reversal of 9726256673 is 3766526279.

It is a happy number.

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 not a de Polignac number, because 9726256673 - 2¹² = 9726252577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9726256643) 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, 694732613 + ... + 694732626.

It is an arithmetic number, because the mean of its divisors is an integer number (2778930480).

Almost surely, 2^9726256673 is an apocalyptic number.

It is an amenable number.

9726256673 is a deficient number, since it is larger than the sum of its proper divisors (1389465247).

9726256673 is a wasteful number, since it uses less digits than its factorization.

9726256673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1389465246.

The product of its digits is 5715360, while the sum is 53.

The square root of 9726256673 is about 98621.7859957930. The cubic root of 9726256673 is about 2134.5937922628.

The spelling of 9726256673 in words is "nine billion, seven hundred twenty-six million, two hundred fifty-six thousand, six hundred seventy-three".