70744729 has 16 divisors (see below), whose sum is σ = 79338240. Its totient is φ = 62530560.

The previous prime is 70744693. The next prime is 70744747. The reversal of 70744729 is 92744707.

It is a cyclic number.

It is not a de Polignac number, because 70744729 - 2¹³ = 70736537 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 70744691 and 70744700.

It is not an unprimeable number, because it can be changed into a prime (70744529) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 99427 + ... + 100135.

It is an arithmetic number, because the mean of its divisors is an integer number (4958640).

Almost surely, 2^70744729 is an apocalyptic number.

It is an amenable number.

70744729 is a deficient number, since it is larger than the sum of its proper divisors (8593511).

70744729 is a wasteful number, since it uses less digits than its factorization.

70744729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 960.

The product of its (nonzero) digits is 98784, while the sum is 40.

The square root of 70744729 is about 8410.9885863672. The cubic root of 70744729 is about 413.5849204689.

The spelling of 70744729 in words is "seventy million, seven hundred forty-four thousand, seven hundred twenty-nine".