70115587 has 4 divisors (see below), whose sum is σ = 71607456. Its totient is φ = 68623720.

The previous prime is 70115579. The next prime is 70115593. The reversal of 70115587 is 78551107.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 78551107 = 179 ⋅438833.

It is a cyclic number.

It is not a de Polignac number, because 70115587 - 2³ = 70115579 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70115597) 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, 745864 + ... + 745957.

It is an arithmetic number, because the mean of its divisors is an integer number (17901864).

Almost surely, 2^70115587 is an apocalyptic number.

70115587 is a deficient number, since it is larger than the sum of its proper divisors (1491869).

70115587 is a wasteful number, since it uses less digits than its factorization.

70115587 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1491868.

The product of its (nonzero) digits is 9800, while the sum is 34.

The square root of 70115587 is about 8373.5050606063. The cubic root of 70115587 is about 412.3552466690.

The spelling of 70115587 in words is "seventy million, one hundred fifteen thousand, five hundred eighty-seven".