66126290 has 8 divisors (see below), whose sum is σ = 119027340. Its totient is φ = 26450512.

The previous prime is 66126287. The next prime is 66126341. The reversal of 66126290 is 9262166.

It can be written as a sum of positive squares in 2 ways, for example, as 55190041 + 10936249 = 7429^2 + 3307^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3306305 + ... + 3306324.

Almost surely, 2^66126290 is an apocalyptic number.

66126290 is a deficient number, since it is larger than the sum of its proper divisors (52901050).

66126290 is a wasteful number, since it uses less digits than its factorization.

66126290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6612636.

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 66126290 is about 8131.8073021930. The cubic root of 66126290 is about 404.3815995473.

The spelling of 66126290 in words is "sixty-six million, one hundred twenty-six thousand, two hundred ninety".