66270770 has 8 divisors (see below), whose sum is σ = 119287404. Its totient is φ = 26508304.

The previous prime is 66270749. The next prime is 66270779. The reversal of 66270770 is 7707266.

It can be written as a sum of positive squares in 2 ways, for example, as 66113161 + 157609 = 8131^2 + 397^2 .

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

It is a super-4 number, since 4×66270770⁴ (a number of 32 digits) contains 4444 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 66270770.

It is not an unprimeable number, because it can be changed into a prime (66270779) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3313529 + ... + 3313548.

Almost surely, 2^66270770 is an apocalyptic number.

66270770 is a deficient number, since it is larger than the sum of its proper divisors (53016634).

66270770 is a wasteful number, since it uses less digits than its factorization.

66270770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6627084.

The product of its (nonzero) digits is 24696, while the sum is 35.

The square root of 66270770 is about 8140.6860890222. The cubic root of 66270770 is about 404.6758977955.

The spelling of 66270770 in words is "sixty-six million, two hundred seventy thousand, seven hundred seventy".