66770043 has 8 divisors (see below), whose sum is σ = 89524800. Its totient is φ = 44264328.

The previous prime is 66770023. The next prime is 66770057. The reversal of 66770043 is 34007766.

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

It is not a de Polignac number, because 66770043 - 2⁹ = 66769531 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 66769986 and 66770013.

It is not an unprimeable number, because it can be changed into a prime (66770003) 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, 61633 + ... + 62706.

It is an arithmetic number, because the mean of its divisors is an integer number (11190600).

Almost surely, 2^66770043 is an apocalyptic number.

66770043 is a deficient number, since it is larger than the sum of its proper divisors (22754757).

66770043 is a wasteful number, since it uses less digits than its factorization.

66770043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124521.

The product of its (nonzero) digits is 21168, while the sum is 33.

The square root of 66770043 is about 8171.2938387993. The cubic root of 66770043 is about 405.6896100476.

The spelling of 66770043 in words is "sixty-six million, seven hundred seventy thousand, forty-three".