70145287 has 6 divisors (see below), whose sum is σ = 72648368. Its totient is φ = 67725672.

The previous prime is 70145279. The next prime is 70145293. The reversal of 70145287 is 78254107.

It is a happy number.

It is not a de Polignac number, because 70145287 - 2³ = 70145279 is a prime.

It is a super-2 number, since 2×70145287² = 9840722576624738, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70145227) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 40863 + ... + 42544.

Almost surely, 2^70145287 is an apocalyptic number.

70145287 is a deficient number, since it is larger than the sum of its proper divisors (2503081).

70145287 is an equidigital number, since it uses as much as digits as its factorization.

70145287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83465 (or 83436 counting only the distinct ones).

The product of its (nonzero) digits is 15680, while the sum is 34.

The square root of 70145287 is about 8375.2783237335. The cubic root of 70145287 is about 412.4134611238.

The spelling of 70145287 in words is "seventy million, one hundred forty-five thousand, two hundred eighty-seven".