70105665 has 16 divisors (see below), whose sum is σ = 128193408. Its totient is φ = 32048256.

The previous prime is 70105661. The next prime is 70105669. The reversal of 70105665 is 56650107.

It is an interprime number because it is at equal distance from previous prime (70105661) and next prime (70105669).

It is not a de Polignac number, because 70105665 - 2² = 70105661 is a prime.

It is not an unprimeable number, because it can be changed into a prime (70105661) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 333732 + ... + 333941.

It is an arithmetic number, because the mean of its divisors is an integer number (8012088).

Almost surely, 2^70105665 is an apocalyptic number.

It is an amenable number.

70105665 is a deficient number, since it is larger than the sum of its proper divisors (58087743).

70105665 is a wasteful number, since it uses less digits than its factorization.

70105665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 667688.

The product of its (nonzero) digits is 6300, while the sum is 30.

The square root of 70105665 is about 8372.9125756812. The cubic root of 70105665 is about 412.3357950656.

The spelling of 70105665 in words is "seventy million, one hundred five thousand, six hundred sixty-five".