726057405 has 16 divisors (see below), whose sum is σ = 1290768960. Its totient is φ = 387230544.

The previous prime is 726057391. The next prime is 726057407. The reversal of 726057405 is 504750627.

726057405 is a `hidden beast` number, since 7 + 2 + 605 + 7 + 40 + 5 = 666.

It is not a de Polignac number, because 726057405 - 2⁴ = 726057389 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 726057405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (726057407) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2688967 + ... + 2689236.

It is an arithmetic number, because the mean of its divisors is an integer number (80673060).

Almost surely, 2^726057405 is an apocalyptic number.

It is an amenable number.

726057405 is a deficient number, since it is larger than the sum of its proper divisors (564711555).

726057405 is a wasteful number, since it uses less digits than its factorization.

726057405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5378217 (or 5378211 counting only the distinct ones).

The product of its (nonzero) digits is 58800, while the sum is 36.

The square root of 726057405 is about 26945.4523992454. The cubic root of 726057405 is about 898.7874225737.

The spelling of 726057405 in words is "seven hundred twenty-six million, fifty-seven thousand, four hundred five".