70715813 has 8 divisors (see below), whose sum is σ = 81652032. Its totient is φ = 59988096.

The previous prime is 70715803. The next prime is 70715837. The reversal of 70715813 is 31851707.

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

It is not a de Polignac number, because 70715813 - 2¹² = 70711717 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 70715813.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70715803) 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, 51395 + ... + 52752.

It is an arithmetic number, because the mean of its divisors is an integer number (10206504).

Almost surely, 2^70715813 is an apocalyptic number.

It is an amenable number.

70715813 is a deficient number, since it is larger than the sum of its proper divisors (10936219).

70715813 is a wasteful number, since it uses less digits than its factorization.

70715813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104251.

The product of its (nonzero) digits is 5880, while the sum is 32.

The square root of 70715813 is about 8409.2694688659. The cubic root of 70715813 is about 413.5285636138.

The spelling of 70715813 in words is "seventy million, seven hundred fifteen thousand, eight hundred thirteen".