66157304 has 8 divisors (see below), whose sum is σ = 124044960. Its totient is φ = 33078648.

The previous prime is 66157277. The next prime is 66157307. The reversal of 66157304 is 40375166.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66157307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4134824 + ... + 4134839.

It is an arithmetic number, because the mean of its divisors is an integer number (15505620).

Almost surely, 2^66157304 is an apocalyptic number.

It is an amenable number.

66157304 is a deficient number, since it is larger than the sum of its proper divisors (57887656).

66157304 is a wasteful number, since it uses less digits than its factorization.

66157304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8269669 (or 8269665 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 32.

The square root of 66157304 is about 8133.7140348060. The cubic root of 66157304 is about 404.4448095593. Note that the first 3 decimals are identical.

The spelling of 66157304 in words is "sixty-six million, one hundred fifty-seven thousand, three hundred four".