70715561 has 8 divisors (see below), whose sum is σ = 81270720. Its totient is φ = 60273648.

The previous prime is 70715537. The next prime is 70715569. The reversal of 70715561 is 16551707.

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 70715561 - 2⁶ = 70715497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70715569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26966 + ... + 29471.

It is an arithmetic number, because the mean of its divisors is an integer number (10158840).

Almost surely, 2^70715561 is an apocalyptic number.

It is an amenable number.

70715561 is a deficient number, since it is larger than the sum of its proper divisors (10555159).

70715561 is a wasteful number, since it uses less digits than its factorization.

70715561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56623.

The product of its (nonzero) digits is 7350, while the sum is 32.

The square root of 70715561 is about 8409.2544853869. The cubic root of 70715561 is about 413.5280724020.

The spelling of 70715561 in words is "seventy million, seven hundred fifteen thousand, five hundred sixty-one".