70721113 has 8 divisors (see below), whose sum is σ = 74899008. Its totient is φ = 66635184.

The previous prime is 70721107. The next prime is 70721141. The reversal of 70721113 is 31112707.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 70721113 - 2¹³ = 70712921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70721153) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21406 + ... + 24487.

It is an arithmetic number, because the mean of its divisors is an integer number (9362376).

Almost surely, 2^70721113 is an apocalyptic number.

It is an amenable number.

70721113 is a deficient number, since it is larger than the sum of its proper divisors (4177895).

70721113 is a wasteful number, since it uses less digits than its factorization.

70721113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45983.

The product of its (nonzero) digits is 294, while the sum is 22.

The square root of 70721113 is about 8409.5845914052. The cubic root of 70721113 is about 413.5388943849.

The spelling of 70721113 in words is "seventy million, seven hundred twenty-one thousand, one hundred thirteen".