70605987 has 8 divisors (see below), whose sum is σ = 94860480. Its totient is φ = 46711080.

The previous prime is 70605959. The next prime is 70606051. The reversal of 70605987 is 78950607.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 70605987 - 2¹⁹ = 70081699 is a prime.

It is not an unprimeable number, because it can be changed into a prime (70605917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 89437 + ... + 90222.

It is an arithmetic number, because the mean of its divisors is an integer number (11857560).

Almost surely, 2^70605987 is an apocalyptic number.

70605987 is a deficient number, since it is larger than the sum of its proper divisors (24254493).

70605987 is a wasteful number, since it uses less digits than its factorization.

70605987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179793.

The product of its (nonzero) digits is 105840, while the sum is 42.

The square root of 70605987 is about 8402.7368755662. The cubic root of 70605987 is about 413.3143742749.

The spelling of 70605987 in words is "seventy million, six hundred five thousand, nine hundred eighty-seven".