66422377 has 8 divisors (see below), whose sum is σ = 77198400. Its totient is φ = 55968144.

The previous prime is 66422359. The next prime is 66422387. The reversal of 66422377 is 77322466.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 66422377 - 2⁷ = 66422249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66422387) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80002 + ... + 80827.

It is an arithmetic number, because the mean of its divisors is an integer number (9649800).

Almost surely, 2^66422377 is an apocalyptic number.

It is an amenable number.

66422377 is a deficient number, since it is larger than the sum of its proper divisors (10776023).

66422377 is a wasteful number, since it uses less digits than its factorization.

66422377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160895.

The product of its digits is 84672, while the sum is 37.

The square root of 66422377 is about 8149.9924539842. The cubic root of 66422377 is about 404.9842538206.

The spelling of 66422377 in words is "sixty-six million, four hundred twenty-two thousand, three hundred seventy-seven".