726634 has 4 divisors (see below), whose sum is σ = 1089954. Its totient is φ = 363316.

The previous prime is 726629. The next prime is 726641. The reversal of 726634 is 436627.

726634 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in only one way, i.e., 418609 + 308025 = 647^2 + 555^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 181657 + ... + 181660.

2⁷²⁶⁶³⁴ is an apocalyptic number.

726634 is a deficient number, since it is larger than the sum of its proper divisors (363320).

726634 is a wasteful number, since it uses less digits than its factorization.

726634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 363319.

The product of its digits is 6048, while the sum is 28.

The square root of 726634 is about 852.4282961047. The cubic root of 726634 is about 89.9025282191.

The spelling of 726634 in words is "seven hundred twenty-six thousand, six hundred thirty-four".