70681513 has 8 divisors (see below), whose sum is σ = 81088128. Its totient is φ = 60352224.

The previous prime is 70681511. The next prime is 70681547. The reversal of 70681513 is 31518607.

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 70681513 - 2¹ = 70681511 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70681511) 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, 17356 + ... + 21037.

It is an arithmetic number, because the mean of its divisors is an integer number (10136016).

Almost surely, 2^70681513 is an apocalyptic number.

It is an amenable number.

70681513 is a deficient number, since it is larger than the sum of its proper divisors (10406615).

70681513 is a wasteful number, since it uses less digits than its factorization.

70681513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38663.

The product of its (nonzero) digits is 5040, while the sum is 31.

The square root of 70681513 is about 8407.2298053521. The cubic root of 70681513 is about 413.4616934989.

The spelling of 70681513 in words is "seventy million, six hundred eighty-one thousand, five hundred thirteen".