70005729 has 16 divisors (see below), whose sum is σ = 94464000. Its totient is φ = 46112976.

The previous prime is 70005707. The next prime is 70005731. The reversal of 70005729 is 92750007.

It is a happy number.

It is not a de Polignac number, because 70005729 - 2⁷ = 70005601 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 70005696 and 70005705.

It is not an unprimeable number, because it can be changed into a prime (70005799) 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, 116572 + ... + 117170.

It is an arithmetic number, because the mean of its divisors is an integer number (5904000).

Almost surely, 2^70005729 is an apocalyptic number.

It is an amenable number.

70005729 is a deficient number, since it is larger than the sum of its proper divisors (24458271).

70005729 is a wasteful number, since it uses less digits than its factorization.

70005729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1004.

The product of its (nonzero) digits is 4410, while the sum is 30.

The square root of 70005729 is about 8366.9426315710. The cubic root of 70005729 is about 412.1397729329.

The spelling of 70005729 in words is "seventy million, five thousand, seven hundred twenty-nine".