66070427 has 2 divisors, whose sum is σ = 66070428. Its totient is φ = 66070426.

The previous prime is 66070423. The next prime is 66070441. The reversal of 66070427 is 72407066.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 66070427 - 2² = 66070423 is a prime.

It is a super-4 number, since 4×66070427⁴ (a number of 32 digits) contains 4444 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 66070393 and 66070402.

It is not a weakly prime, because it can be changed into another prime (66070423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33035213 + 33035214.

It is an arithmetic number, because the mean of its divisors is an integer number (33035214).

Almost surely, 2^66070427 is an apocalyptic number.

66070427 is a deficient number, since it is larger than the sum of its proper divisors (1).

66070427 is an equidigital number, since it uses as much as digits as its factorization.

66070427 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14112, while the sum is 32.

The square root of 66070427 is about 8128.3717311649. The cubic root of 66070427 is about 404.2676946059.

The spelling of 66070427 in words is "sixty-six million, seventy thousand, four hundred twenty-seven".