70729793 has 4 divisors (see below), whose sum is σ = 70761408. Its totient is φ = 70698180.

The previous prime is 70729787. The next prime is 70729801. The reversal of 70729793 is 39792707.

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 70729793 - 2⁴ = 70729777 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (70729993) 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, 12173 + ... + 17018.

It is an arithmetic number, because the mean of its divisors is an integer number (17690352).

Almost surely, 2^70729793 is an apocalyptic number.

It is an amenable number.

70729793 is a deficient number, since it is larger than the sum of its proper divisors (31615).

70729793 is a wasteful number, since it uses less digits than its factorization.

70729793 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31614.

The product of its (nonzero) digits is 166698, while the sum is 44.

The square root of 70729793 is about 8410.1006533810. The cubic root of 70729793 is about 413.5558123444. Note that the first 3 decimals are identical.

The spelling of 70729793 in words is "seventy million, seven hundred twenty-nine thousand, seven hundred ninety-three".