726873797 has 4 divisors (see below), whose sum is σ = 782787180. Its totient is φ = 670960416.

The previous prime is 726873793. The next prime is 726873809. The reversal of 726873797 is 797378627.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 393665281 + 333208516 = 19841^2 + 18254^2 .

It is a cyclic number.

It is not a de Polignac number, because 726873797 - 2² = 726873793 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 (726873793) 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, 27956672 + ... + 27956697.

It is an arithmetic number, because the mean of its divisors is an integer number (195696795).

Almost surely, 2^726873797 is an apocalyptic number.

It is an amenable number.

726873797 is a deficient number, since it is larger than the sum of its proper divisors (55913383).

726873797 is a wasteful number, since it uses less digits than its factorization.

726873797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55913382.

The product of its digits is 6223392, while the sum is 56.

The square root of 726873797 is about 26960.5971187583. The cubic root of 726873797 is about 899.1241673037.

The spelling of 726873797 in words is "seven hundred twenty-six million, eight hundred seventy-three thousand, seven hundred ninety-seven".