729457647 has 8 divisors (see below), whose sum is σ = 980269056. Its totient is φ = 482475672.

The previous prime is 729457637. The next prime is 729457657. The reversal of 729457647 is 746754927.

It is an interprime number because it is at equal distance from previous prime (729457637) and next prime (729457657).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 729457647 - 2²⁴ = 712680431 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 729457647.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (729457637) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 956913 + ... + 957674.

It is an arithmetic number, because the mean of its divisors is an integer number (122533632).

Almost surely, 2^729457647 is an apocalyptic number.

729457647 is a deficient number, since it is larger than the sum of its proper divisors (250811409).

729457647 is a wasteful number, since it uses less digits than its factorization.

729457647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1914717.

The product of its digits is 2963520, while the sum is 51.

The square root of 729457647 is about 27008.4736147750. The cubic root of 729457647 is about 900.1882927025.

The spelling of 729457647 in words is "seven hundred twenty-nine million, four hundred fifty-seven thousand, six hundred forty-seven".