70804427 has 2 divisors, whose sum is σ = 70804428. Its totient is φ = 70804426.

The previous prime is 70804423. The next prime is 70804519. The reversal of 70804427 is 72440807.

It is a weak prime.

It is an emirp because it is prime and its reverse (72440807) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 70804427 - 2² = 70804423 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 70804393 and 70804402.

It is not a weakly prime, because it can be changed into another prime (70804423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35402213 + 35402214.

It is an arithmetic number, because the mean of its divisors is an integer number (35402214).

Almost surely, 2^70804427 is an apocalyptic number.

70804427 is a deficient number, since it is larger than the sum of its proper divisors (1).

70804427 is an equidigital number, since it uses as much as digits as its factorization.

70804427 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12544, while the sum is 32.

The square root of 70804427 is about 8414.5366479682. The cubic root of 70804427 is about 413.7012224240.

The spelling of 70804427 in words is "seventy million, eight hundred four thousand, four hundred twenty-seven".