726680441 has 4 divisors (see below), whose sum is σ = 764926800. Its totient is φ = 688434084.

The previous prime is 726680417. The next prime is 726680443. The reversal of 726680441 is 144086627.

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 a de Polignac number, because none of the positive numbers 2^k-726680441 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 726680395 and 726680404.

It is not an unprimeable number, because it can be changed into a prime (726680443) 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, 19123151 + ... + 19123188.

It is an arithmetic number, because the mean of its divisors is an integer number (191231700).

Almost surely, 2^726680441 is an apocalyptic number.

It is an amenable number.

726680441 is a deficient number, since it is larger than the sum of its proper divisors (38246359).

726680441 is a wasteful number, since it uses less digits than its factorization.

726680441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38246358.

The product of its (nonzero) digits is 64512, while the sum is 38.

The square root of 726680441 is about 26957.0109804481. The cubic root of 726680441 is about 899.0444347692.

The spelling of 726680441 in words is "seven hundred twenty-six million, six hundred eighty thousand, four hundred forty-one".