726646550 has 24 divisors (see below), whose sum is σ = 1544643696. Its totient is φ = 249135840.

The previous prime is 726646549. The next prime is 726646561. The reversal of 726646550 is 55646627.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 726646498 and 726646507.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1037717 + ... + 1038416.

It is an arithmetic number, because the mean of its divisors is an integer number (64360154).

Almost surely, 2^726646550 is an apocalyptic number.

726646550 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

726646550 is an abundant number, since it is smaller than the sum of its proper divisors (817997146).

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

726646550 is a wasteful number, since it uses less digits than its factorization.

726646550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2076152 (or 2076147 counting only the distinct ones).

The product of its (nonzero) digits is 302400, while the sum is 41.

The square root of 726646550 is about 26956.3823611404. The cubic root of 726646550 is about 899.0304579752.

The spelling of 726646550 in words is "seven hundred twenty-six million, six hundred forty-six thousand, five hundred fifty".