66770051 has 8 divisors (see below), whose sum is σ = 68076000. Its totient is φ = 65471040.

The previous prime is 66770023. The next prime is 66770057. The reversal of 66770051 is 15007766.

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 66770051 - 2⁶ = 66769987 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66770057) 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, 20375 + ... + 23423.

It is an arithmetic number, because the mean of its divisors is an integer number (8509500).

Almost surely, 2^66770051 is an apocalyptic number.

66770051 is a gapful number since it is divisible by the number (61) formed by its first and last digit.

66770051 is a deficient number, since it is larger than the sum of its proper divisors (1305949).

66770051 is a wasteful number, since it uses less digits than its factorization.

66770051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3469.

The product of its (nonzero) digits is 8820, while the sum is 32.

The square root of 66770051 is about 8171.2943283179. The cubic root of 66770051 is about 405.6896262501.

The spelling of 66770051 in words is "sixty-six million, seven hundred seventy thousand, fifty-one".