70437187 has 2 divisors, whose sum is σ = 70437188. Its totient is φ = 70437186.

The previous prime is 70437149. The next prime is 70437223. The reversal of 70437187 is 78173407.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 70437187 - 2¹¹ = 70435139 is a prime.

It is a super-2 number, since 2×70437187² = 9922794624945938, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (70447187) 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 as a sum of consecutive naturals, namely, 35218593 + 35218594.

It is an arithmetic number, because the mean of its divisors is an integer number (35218594).

Almost surely, 2^70437187 is an apocalyptic number.

70437187 is a deficient number, since it is larger than the sum of its proper divisors (1).

70437187 is an equidigital number, since it uses as much as digits as its factorization.

70437187 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32928, while the sum is 37.

The square root of 70437187 is about 8392.6865186304. The cubic root of 70437187 is about 412.9847367954.

The spelling of 70437187 in words is "seventy million, four hundred thirty-seven thousand, one hundred eighty-seven".