70040287 has 2 divisors, whose sum is σ = 70040288. Its totient is φ = 70040286.

The previous prime is 70040263. The next prime is 70040317. The reversal of 70040287 is 78204007.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-70040287 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70040237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35020143 + 35020144.

It is an arithmetic number, because the mean of its divisors is an integer number (35020144).

Almost surely, 2^70040287 is an apocalyptic number.

70040287 is a deficient number, since it is larger than the sum of its proper divisors (1).

70040287 is an equidigital number, since it uses as much as digits as its factorization.

70040287 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3136, while the sum is 28.

The square root of 70040287 is about 8369.0075277777. The cubic root of 70040287 is about 412.2075787326.

The spelling of 70040287 in words is "seventy million, forty thousand, two hundred eighty-seven".