726673157 has 16 divisors (see below), whose sum is σ = 850278912. Its totient is φ = 608083200.

The previous prime is 726673153. The next prime is 726673159. The reversal of 726673157 is 751376627.

It is a cyclic number.

It is not a de Polignac number, because 726673157 - 2² = 726673153 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (726673153) 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, 139907 + ... + 145007.

It is an arithmetic number, because the mean of its divisors is an integer number (53142432).

Almost surely, 2^726673157 is an apocalyptic number.

It is an amenable number.

726673157 is a deficient number, since it is larger than the sum of its proper divisors (123605755).

726673157 is a wasteful number, since it uses less digits than its factorization.

726673157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5588.

The product of its digits is 370440, while the sum is 44.

The square root of 726673157 is about 26956.8758761100. The cubic root of 726673157 is about 899.0414308530.

The spelling of 726673157 in words is "seven hundred twenty-six million, six hundred seventy-three thousand, one hundred fifty-seven".