70905700387 has 4 divisors (see below), whose sum is σ = 70946289256. Its totient is φ = 70865111520.

The previous prime is 70905700363. The next prime is 70905700441. The reversal of 70905700387 is 78300750907.

It is a happy number.

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 70905700387 - 2²⁷ = 70771482659 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70905730387) 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, 20291814 + ... + 20295307.

It is an arithmetic number, because the mean of its divisors is an integer number (17736572314).

Almost surely, 2^70905700387 is an apocalyptic number.

70905700387 is a deficient number, since it is larger than the sum of its proper divisors (40588869).

70905700387 is a wasteful number, since it uses less digits than its factorization.

70905700387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40588868.

The product of its (nonzero) digits is 370440, while the sum is 46.

The spelling of 70905700387 in words is "seventy billion, nine hundred five million, seven hundred thousand, three hundred eighty-seven".