70956891 has 10 divisors (see below), whose sum is σ = 105997452. Its totient is φ = 47304540.

The previous prime is 70956857. The next prime is 70956911. The reversal of 70956891 is 19865907.

It is not a de Polignac number, because 70956891 - 2¹⁰ = 70955867 is a prime.

It is not an unprimeable number, because it can be changed into a prime (70956841) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 437925 + ... + 438086.

Almost surely, 2^70956891 is an apocalyptic number.

70956891 is a deficient number, since it is larger than the sum of its proper divisors (35040561).

70956891 is an equidigital number, since it uses as much as digits as its factorization.

70956891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 876023 (or 876014 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 45.

The square root of 70956891 is about 8423.5913362413. The cubic root of 70956891 is about 413.9979521008.

It can be divided in two parts, 709 and 56891, that added together give a square (57600 = 240²).

The spelling of 70956891 in words is "seventy million, nine hundred fifty-six thousand, eight hundred ninety-one".