729467761 has 4 divisors (see below), whose sum is σ = 795783024. Its totient is φ = 663152500.

The previous prime is 729467759. The next prime is 729467797. The reversal of 729467761 is 167764927.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 729467761 - 2¹ = 729467759 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (729467731) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33157615 + ... + 33157636.

It is an arithmetic number, because the mean of its divisors is an integer number (198945756).

Almost surely, 2^729467761 is an apocalyptic number.

It is an amenable number.

729467761 is a deficient number, since it is larger than the sum of its proper divisors (66315263).

729467761 is a wasteful number, since it uses less digits than its factorization.

729467761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66315262.

The product of its digits is 889056, while the sum is 49.

The square root of 729467761 is about 27008.6608516602. The cubic root of 729467761 is about 900.1924530822.

The spelling of 729467761 in words is "seven hundred twenty-nine million, four hundred sixty-seven thousand, seven hundred sixty-one".