729497070 has 64 divisors (see below), whose sum is σ = 1953080640. Its totient is φ = 193757184.

The previous prime is 729497033. The next prime is 729497089. The reversal of 729497070 is 70794927.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 64134 + ... + 74646.

It is an arithmetic number, because the mean of its divisors is an integer number (30516885).

Almost surely, 2^729497070 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 729497070, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (976540320).

729497070 is an abundant number, since it is smaller than the sum of its proper divisors (1223583570).

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

729497070 is a wasteful number, since it uses less digits than its factorization.

729497070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10786 (or 10780 counting only the distinct ones).

The product of its (nonzero) digits is 222264, while the sum is 45.

The square root of 729497070 is about 27009.2034314231. The cubic root of 729497070 is about 900.2045090810.

The spelling of 729497070 in words is "seven hundred twenty-nine million, four hundred ninety-seven thousand, seventy".