70106887 has 4 divisors (see below), whose sum is σ = 70365856. Its totient is φ = 69847920.

The previous prime is 70106879. The next prime is 70106893. The reversal of 70106887 is 78860107.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 78860107 = 6779 ⋅11633.

It is a cyclic number.

It is not a de Polignac number, because 70106887 - 2³ = 70106879 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70106807) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 129078 + ... + 129619.

It is an arithmetic number, because the mean of its divisors is an integer number (17591464).

Almost surely, 2^70106887 is an apocalyptic number.

70106887 is a deficient number, since it is larger than the sum of its proper divisors (258969).

70106887 is a wasteful number, since it uses less digits than its factorization.

70106887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258968.

The product of its (nonzero) digits is 18816, while the sum is 37.

The square root of 70106887 is about 8372.9855487753. The cubic root of 70106887 is about 412.3381908369.

The spelling of 70106887 in words is "seventy million, one hundred six thousand, eight hundred eighty-seven".