70865371 has 4 divisors (see below), whose sum is σ = 71075992. Its totient is φ = 70654752.

The previous prime is 70865363. The next prime is 70865413. The reversal of 70865371 is 17356807.

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 70865371 - 2³ = 70865363 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 70865371.

It is not an unprimeable number, because it can be changed into a prime (70865771) 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, 104805 + ... + 105478.

It is an arithmetic number, because the mean of its divisors is an integer number (17768998).

Almost surely, 2^70865371 is an apocalyptic number.

70865371 is a deficient number, since it is larger than the sum of its proper divisors (210621).

70865371 is a wasteful number, since it uses less digits than its factorization.

70865371 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210620.

The product of its (nonzero) digits is 35280, while the sum is 37.

The square root of 70865371 is about 8418.1572211500. The cubic root of 70865371 is about 413.8198843873.

The spelling of 70865371 in words is "seventy million, eight hundred sixty-five thousand, three hundred seventy-one".