70116815 has 4 divisors (see below), whose sum is σ = 84140184. Its totient is φ = 56093448.

The previous prime is 70116803. The next prime is 70116829. The reversal of 70116815 is 51861107.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 51861107 = 839 ⋅61813.

It is a cyclic number.

It is not a de Polignac number, because 70116815 - 2⁸ = 70116559 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7011677 + ... + 7011686.

It is an arithmetic number, because the mean of its divisors is an integer number (21035046).

Almost surely, 2^70116815 is an apocalyptic number.

70116815 is a deficient number, since it is larger than the sum of its proper divisors (14023369).

70116815 is a wasteful number, since it uses less digits than its factorization.

70116815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14023368.

The product of its (nonzero) digits is 1680, while the sum is 29.

The square root of 70116815 is about 8373.5783868069. The cubic root of 70116815 is about 412.3576539762.

The spelling of 70116815 in words is "seventy million, one hundred sixteen thousand, eight hundred fifteen".