70945287 has 12 divisors (see below), whose sum is σ = 110037816. Its totient is φ = 40540080.

The previous prime is 70945279. The next prime is 70945309. The reversal of 70945287 is 78254907.

It is not a de Polignac number, because 70945287 - 2³ = 70945279 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70945207) 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 11 ways as a sum of consecutive naturals, for example, 241164 + ... + 241457.

It is an arithmetic number, because the mean of its divisors is an integer number (9169818).

Almost surely, 2^70945287 is an apocalyptic number.

70945287 is a deficient number, since it is larger than the sum of its proper divisors (39092529).

70945287 is a wasteful number, since it uses less digits than its factorization.

70945287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 482638 (or 482631 counting only the distinct ones).

The product of its (nonzero) digits is 141120, while the sum is 42.

The square root of 70945287 is about 8422.9025282262. The cubic root of 70945287 is about 413.9753830260.

The spelling of 70945287 in words is "seventy million, nine hundred forty-five thousand, two hundred eighty-seven".