70889947 has 4 divisors (see below), whose sum is σ = 71017776. Its totient is φ = 70762120.

The previous prime is 70889941. The next prime is 70889971. The reversal of 70889947 is 74998807.

It is a happy number.

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 70889947 - 2²³ = 62501339 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 70889894 and 70889903.

It is not an unprimeable number, because it can be changed into a prime (70889941) 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, 63079 + ... + 64192.

It is an arithmetic number, because the mean of its divisors is an integer number (17754444).

Almost surely, 2^70889947 is an apocalyptic number.

70889947 is a deficient number, since it is larger than the sum of its proper divisors (127829).

70889947 is a wasteful number, since it uses less digits than its factorization.

70889947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127828.

The product of its (nonzero) digits is 1016064, while the sum is 52.

The square root of 70889947 is about 8419.6167965056. The cubic root of 70889947 is about 413.8677162216.

The spelling of 70889947 in words is "seventy million, eight hundred eighty-nine thousand, nine hundred forty-seven".