726725747 has 4 divisors (see below), whose sum is σ = 792791736. Its totient is φ = 660659760.

The previous prime is 726725729. The next prime is 726725749. The reversal of 726725747 is 747527627.

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

It is a cyclic number.

It is not a de Polignac number, because 726725747 - 2¹² = 726721651 is a prime.

It is a super-2 number, since 2×726725747² = 1056260622705416018, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (726725749) 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, 33032978 + ... + 33032999.

It is an arithmetic number, because the mean of its divisors is an integer number (198197934).

Almost surely, 2^726725747 is an apocalyptic number.

726725747 is a deficient number, since it is larger than the sum of its proper divisors (66065989).

726725747 is a wasteful number, since it uses less digits than its factorization.

726725747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66065988.

The product of its digits is 1152480, while the sum is 47.

The square root of 726725747 is about 26957.8513053248. The cubic root of 726725747 is about 899.0631184796.

The spelling of 726725747 in words is "seven hundred twenty-six million, seven hundred twenty-five thousand, seven hundred forty-seven".