70006987 has 2 divisors, whose sum is σ = 70006988. Its totient is φ = 70006986.

The previous prime is 70006973. The next prime is 70006991. The reversal of 70006987 is 78960007.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 70006987 - 2²³ = 61618379 is a prime.

It is not a weakly prime, because it can be changed into another prime (70006787) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35003493 + 35003494.

It is an arithmetic number, because the mean of its divisors is an integer number (35003494).

Almost surely, 2^70006987 is an apocalyptic number.

70006987 is a deficient number, since it is larger than the sum of its proper divisors (1).

70006987 is an equidigital number, since it uses as much as digits as its factorization.

70006987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21168, while the sum is 37.

The square root of 70006987 is about 8367.0178080365. The cubic root of 70006987 is about 412.1422416296.

The spelling of 70006987 in words is "seventy million, six thousand, nine hundred eighty-seven".