726270646 has 4 divisors (see below), whose sum is σ = 1089405972. Its totient is φ = 363135322.

The previous prime is 726270631. The next prime is 726270647. The reversal of 726270646 is 646072627.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 726270599 and 726270608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (726270647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 181567660 + ... + 181567663.

It is an arithmetic number, because the mean of its divisors is an integer number (272351493).

Almost surely, 2^726270646 is an apocalyptic number.

726270646 is a deficient number, since it is larger than the sum of its proper divisors (363135326).

726270646 is a wasteful number, since it uses less digits than its factorization.

726270646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 363135325.

The product of its (nonzero) digits is 169344, while the sum is 40.

The square root of 726270646 is about 26949.4090102176. The cubic root of 726270646 is about 898.8754043996.

The spelling of 726270646 in words is "seven hundred twenty-six million, two hundred seventy thousand, six hundred forty-six".