726725706 has 16 divisors (see below), whose sum is σ = 1661087424. Its totient is φ = 207635904.

The previous prime is 726725677. The next prime is 726725719. The reversal of 726725706 is 607527627.

It is a super-2 number, since 2×726725706² = 1056260503522396872, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42), and also a Moran number because the ratio is a prime number: 17302993 = 726725706 / (7 + 2 + 6 + 7 + 2 + 5 + 7 + 0 + 6).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8651455 + ... + 8651538.

It is an arithmetic number, because the mean of its divisors is an integer number (103817964).

Almost surely, 2^726725706 is an apocalyptic number.

726725706 is an abundant number, since it is smaller than the sum of its proper divisors (934361718).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

726725706 is a wasteful number, since it uses less digits than its factorization.

726725706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17303005.

The product of its (nonzero) digits is 246960, while the sum is 42.

The square root of 726725706 is about 26957.8505448784. The cubic root of 726725706 is about 899.0631015720.

The spelling of 726725706 in words is "seven hundred twenty-six million, seven hundred twenty-five thousand, seven hundred six".