70861853 has 4 divisors (see below), whose sum is σ = 72369600. Its totient is φ = 69354108.

The previous prime is 70861801. The next prime is 70861859. The reversal of 70861853 is 35816807.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 70861853 - 2⁶ = 70861789 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 (70861859) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 753803 + ... + 753896.

It is an arithmetic number, because the mean of its divisors is an integer number (18092400).

Almost surely, 2^70861853 is an apocalyptic number.

It is an amenable number.

70861853 is a deficient number, since it is larger than the sum of its proper divisors (1507747).

70861853 is a wasteful number, since it uses less digits than its factorization.

70861853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1507746.

The product of its (nonzero) digits is 40320, while the sum is 38.

The square root of 70861853 is about 8417.9482654623. The cubic root of 70861853 is about 413.8130364613.

The spelling of 70861853 in words is "seventy million, eight hundred sixty-one thousand, eight hundred fifty-three".