70726979 has 4 divisors (see below), whose sum is σ = 70759920. Its totient is φ = 70694040.

The previous prime is 70726933. The next prime is 70726991. The reversal of 70726979 is 97962707.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 70726979 - 2⁸ = 70726723 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70726079) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13007 + ... + 17624.

It is an arithmetic number, because the mean of its divisors is an integer number (17689980).

Almost surely, 2^70726979 is an apocalyptic number.

70726979 is a deficient number, since it is larger than the sum of its proper divisors (32941).

70726979 is a wasteful number, since it uses less digits than its factorization.

70726979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32940.

The product of its (nonzero) digits is 333396, while the sum is 47.

The square root of 70726979 is about 8409.9333528869. The cubic root of 70726979 is about 413.5503278027.

The spelling of 70726979 in words is "seventy million, seven hundred twenty-six thousand, nine hundred seventy-nine".