70424587 has 4 divisors (see below), whose sum is σ = 71273160. Its totient is φ = 69576016.

The previous prime is 70424569. The next prime is 70424603. The reversal of 70424587 is 78542407.

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 70424587 - 2¹⁵ = 70391819 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70424537) 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, 424162 + ... + 424327.

It is an arithmetic number, because the mean of its divisors is an integer number (17818290).

Almost surely, 2^70424587 is an apocalyptic number.

70424587 is a deficient number, since it is larger than the sum of its proper divisors (848573).

70424587 is an equidigital number, since it uses as much as digits as its factorization.

70424587 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 848572.

The product of its (nonzero) digits is 62720, while the sum is 37.

The square root of 70424587 is about 8391.9358314992. The cubic root of 70424587 is about 412.9601100406.

The spelling of 70424587 in words is "seventy million, four hundred twenty-four thousand, five hundred eighty-seven".