66160004 has 12 divisors (see below), whose sum is σ = 117742800. Its totient is φ = 32519208.

The previous prime is 66159997. The next prime is 66160007. The reversal of 66160004 is 40006166.

It is a super-2 number, since 2×66160004² = 8754292258560032, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (66160007) 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, 139934 + ... + 140405.

It is an arithmetic number, because the mean of its divisors is an integer number (9811900).

Almost surely, 2^66160004 is an apocalyptic number.

It is an amenable number.

66160004 is a deficient number, since it is larger than the sum of its proper divisors (51582796).

66160004 is a wasteful number, since it uses less digits than its factorization.

66160004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280402 (or 280400 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 66160004 is about 8133.8800089502. The cubic root of 66160004 is about 404.4503115274.

The spelling of 66160004 in words is "sixty-six million, one hundred sixty thousand, four".