726647976 has 64 divisors (see below), whose sum is σ = 2041200000. Its totient is φ = 239488128.

The previous prime is 726647963. The next prime is 726647981. The reversal of 726647976 is 679746627.

It is a happy number.

726647976 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 325 + ... + 38123.

It is an arithmetic number, because the mean of its divisors is an integer number (31893750).

Almost surely, 2^726647976 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 726647976, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1020600000).

726647976 is an abundant number, since it is smaller than the sum of its proper divisors (1314552024).

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

726647976 is a wasteful number, since it uses less digits than its factorization.

726647976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37903 (or 37893 counting only the distinct ones).

The product of its digits is 5334336, while the sum is 54.

The square root of 726647976 is about 26956.4088112642. The cubic root of 726647976 is about 899.0310460725.

The spelling of 726647976 in words is "seven hundred twenty-six million, six hundred forty-seven thousand, nine hundred seventy-six".