726047491 has 12 divisors (see below), whose sum is σ = 797279760. Its totient is φ = 660747360.

The previous prime is 726047473. The next prime is 726047501. The reversal of 726047491 is 194740627.

It is not a de Polignac number, because 726047491 - 2¹¹ = 726045443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (726047461) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18256 + ... + 42253.

It is an arithmetic number, because the mean of its divisors is an integer number (66439980).

Almost surely, 2^726047491 is an apocalyptic number.

726047491 is a gapful number since it is divisible by the number (71) formed by its first and last digit.

726047491 is a deficient number, since it is larger than the sum of its proper divisors (71232269).

726047491 is a wasteful number, since it uses less digits than its factorization.

726047491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60606 (or 60593 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 40.

The square root of 726047491 is about 26945.2684343652. The cubic root of 726047491 is about 898.7833317038.

The spelling of 726047491 in words is "seven hundred twenty-six million, forty-seven thousand, four hundred ninety-one".