66253010 has 8 divisors (see below), whose sum is σ = 119255436. Its totient is φ = 26501200.

The previous prime is 66253003. The next prime is 66253013. The reversal of 66253010 is 1035266.

It can be written as a sum of positive squares in 2 ways, for example, as 54302161 + 11950849 = 7369^2 + 3457^2 .

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

It is a super-2 number, since 2×66253010² = 8778922668120200, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (66253013) 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, 3312641 + ... + 3312660.

Almost surely, 2^66253010 is an apocalyptic number.

66253010 is a deficient number, since it is larger than the sum of its proper divisors (53002426).

66253010 is a wasteful number, since it uses less digits than its factorization.

66253010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6625308.

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 66253010 is about 8139.5951987799. The cubic root of 66253010 is about 404.6397446717.

Adding to 66253010 its reverse (1035266), we get a palindrome (67288276).

The spelling of 66253010 in words is "sixty-six million, two hundred fifty-three thousand, ten".