70884691 has 4 divisors (see below), whose sum is σ = 72222192. Its totient is φ = 69547192.

The previous prime is 70884661. The next prime is 70884707. The reversal of 70884691 is 19648807.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19648807 = 43 ⋅456949.

It is a cyclic number.

It is not a de Polignac number, because 70884691 - 2¹³ = 70876499 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70884641) 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, 668671 + ... + 668776.

It is an arithmetic number, because the mean of its divisors is an integer number (18055548).

Almost surely, 2^70884691 is an apocalyptic number.

70884691 is a deficient number, since it is larger than the sum of its proper divisors (1337501).

70884691 is a wasteful number, since it uses less digits than its factorization.

70884691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1337500.

The product of its (nonzero) digits is 96768, while the sum is 43.

The square root of 70884691 is about 8419.3046625003. The cubic root of 70884691 is about 413.8574874912.

The spelling of 70884691 in words is "seventy million, eight hundred eighty-four thousand, six hundred ninety-one".