70386687 has 36 divisors (see below), whose sum is σ = 119355600. Its totient is φ = 39954600.

The previous prime is 70386661. The next prime is 70386689. The reversal of 70386687 is 78668307.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It is not a de Polignac number, because 70386687 - 2¹⁶ = 70321151 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70386689) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 466062 + ... + 466212.

Almost surely, 2^70386687 is an apocalyptic number.

70386687 is a deficient number, since it is larger than the sum of its proper divisors (48968913).

70386687 is an equidigital number, since it uses as much as digits as its factorization.

70386687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 329 (or 161 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 45.

The square root of 70386687 is about 8389.6774073858. The cubic root of 70386687 is about 412.8860166152.

The spelling of 70386687 in words is "seventy million, three hundred eighty-six thousand, six hundred eighty-seven".