66757146 has 32 divisors (see below), whose sum is σ = 142013760. Its totient is φ = 20860416.

The previous prime is 66757129. The next prime is 66757151. The reversal of 66757146 is 64175766.

It is a junction number, because it is equal to n+sod(n) for n = 66757098 and 66757107.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8040 + ... + 14076.

It is an arithmetic number, because the mean of its divisors is an integer number (4437930).

Almost surely, 2^66757146 is an apocalyptic number.

66757146 is an abundant number, since it is smaller than the sum of its proper divisors (75256614).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66757146 is a wasteful number, since it uses less digits than its factorization.

66757146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6158.

The product of its digits is 211680, while the sum is 42.

The square root of 66757146 is about 8170.5046355779. The cubic root of 66757146 is about 405.6634879747.

The spelling of 66757146 in words is "sixty-six million, seven hundred fifty-seven thousand, one hundred forty-six".