70871523 has 4 divisors (see below), whose sum is σ = 94495368. Its totient is φ = 47247680.

The previous prime is 70871509. The next prime is 70871543. The reversal of 70871523 is 32517807.

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

It is a cyclic number.

It is not a de Polignac number, because 70871523 - 2⁵ = 70871491 is a prime.

It is not an unprimeable number, because it can be changed into a prime (70871503) 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, 11811918 + ... + 11811923.

It is an arithmetic number, because the mean of its divisors is an integer number (23623842).

Almost surely, 2^70871523 is an apocalyptic number.

70871523 is a deficient number, since it is larger than the sum of its proper divisors (23623845).

70871523 is a wasteful number, since it uses less digits than its factorization.

70871523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23623844.

The product of its (nonzero) digits is 11760, while the sum is 33.

The square root of 70871523 is about 8418.5226138557. The cubic root of 70871523 is about 413.8318589537.

The spelling of 70871523 in words is "seventy million, eight hundred seventy-one thousand, five hundred twenty-three".