70871187 has 4 divisors (see below), whose sum is σ = 94494920. Its totient is φ = 47247456.

The previous prime is 70871161. The next prime is 70871201. The reversal of 70871187 is 78117807.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 70871187 - 2²³ = 62482579 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70871117) 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, 11811862 + ... + 11811867.

It is an arithmetic number, because the mean of its divisors is an integer number (23623730).

Almost surely, 2^70871187 is an apocalyptic number.

70871187 is a deficient number, since it is larger than the sum of its proper divisors (23623733).

70871187 is a wasteful number, since it uses less digits than its factorization.

70871187 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23623732.

The product of its (nonzero) digits is 21952, while the sum is 39.

The square root of 70871187 is about 8418.5026578365. The cubic root of 70871187 is about 413.8312049640.

The spelling of 70871187 in words is "seventy million, eight hundred seventy-one thousand, one hundred eighty-seven".