70685871 has 32 divisors (see below), whose sum is σ = 102359040. Its totient is φ = 43252704.

The previous prime is 70685869. The next prime is 70685893. The reversal of 70685871 is 17858607.

It is not a de Polignac number, because 70685871 - 2¹ = 70685869 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70685821) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 316866 + ... + 317088.

It is an arithmetic number, because the mean of its divisors is an integer number (3198720).

Almost surely, 2^70685871 is an apocalyptic number.

70685871 is a deficient number, since it is larger than the sum of its proper divisors (31673169).

70685871 is a wasteful number, since it uses less digits than its factorization.

70685871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 395.

The product of its (nonzero) digits is 94080, while the sum is 42.

The square root of 70685871 is about 8407.4889830436. The cubic root of 70685871 is about 413.4701909072.

The spelling of 70685871 in words is "seventy million, six hundred eighty-five thousand, eight hundred seventy-one".