70912587 has 4 divisors (see below), whose sum is σ = 94550120. Its totient is φ = 47275056.

The previous prime is 70912577. The next prime is 70912603. The reversal of 70912587 is 78521907.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 70912587 - 2¹² = 70908491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70912507) 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, 11818762 + ... + 11818767.

It is an arithmetic number, because the mean of its divisors is an integer number (23637530).

Almost surely, 2^70912587 is an apocalyptic number.

70912587 is a deficient number, since it is larger than the sum of its proper divisors (23637533).

70912587 is a wasteful number, since it uses less digits than its factorization.

70912587 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23637532.

The product of its (nonzero) digits is 35280, while the sum is 39.

The square root of 70912587 is about 8420.9611684178. The cubic root of 70912587 is about 413.9117702715.

The spelling of 70912587 in words is "seventy million, nine hundred twelve thousand, five hundred eighty-seven".