66957010 has 8 divisors (see below), whose sum is σ = 120522636. Its totient is φ = 26782800.

The previous prime is 66957001. The next prime is 66957017. The reversal of 66957010 is 1075966.

It can be written as a sum of positive squares in 2 ways, for example, as 63792169 + 3164841 = 7987^2 + 1779^2 .

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

It is not an unprimeable number, because it can be changed into a prime (66957017) 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, 3347841 + ... + 3347860.

Almost surely, 2^66957010 is an apocalyptic number.

66957010 is a deficient number, since it is larger than the sum of its proper divisors (53565626).

66957010 is a wasteful number, since it uses less digits than its factorization.

66957010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6695708.

The product of its (nonzero) digits is 11340, while the sum is 34.

The square root of 66957010 is about 8182.7263182878. The cubic root of 66957010 is about 406.0679228252.

The spelling of 66957010 in words is "sixty-six million, nine hundred fifty-seven thousand, ten".