70915665 has 8 divisors (see below), whose sum is σ = 113465088. Its totient is φ = 37821680.

The previous prime is 70915661. The next prime is 70915667. The reversal of 70915665 is 56651907.

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

It is not a de Polignac number, because 70915665 - 2² = 70915661 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (70915661) 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, 2363841 + ... + 2363870.

It is an arithmetic number, because the mean of its divisors is an integer number (14183136).

Almost surely, 2^70915665 is an apocalyptic number.

It is an amenable number.

70915665 is a deficient number, since it is larger than the sum of its proper divisors (42549423).

70915665 is a wasteful number, since it uses less digits than its factorization.

70915665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4727719.

The product of its (nonzero) digits is 56700, while the sum is 39.

The square root of 70915665 is about 8421.1439246696. The cubic root of 70915665 is about 413.9177588745.

The spelling of 70915665 in words is "seventy million, nine hundred fifteen thousand, six hundred sixty-five".