70121827 has 2 divisors, whose sum is σ = 70121828. Its totient is φ = 70121826.

The previous prime is 70121789. The next prime is 70121839. The reversal of 70121827 is 72812107.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 70121827 - 2⁷ = 70121699 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 70121795 and 70121804.

It is not a weakly prime, because it can be changed into another prime (70121867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35060913 + 35060914.

It is an arithmetic number, because the mean of its divisors is an integer number (35060914).

Almost surely, 2^70121827 is an apocalyptic number.

70121827 is a deficient number, since it is larger than the sum of its proper divisors (1).

70121827 is an equidigital number, since it uses as much as digits as its factorization.

70121827 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1568, while the sum is 28.

The square root of 70121827 is about 8373.8776561400. The cubic root of 70121827 is about 412.3674789486.

The spelling of 70121827 in words is "seventy million, one hundred twenty-one thousand, eight hundred twenty-seven".