66252510 has 48 divisors (see below), whose sum is σ = 172658304. Its totient is φ = 17626176.

The previous prime is 66252503. The next prime is 66252517. The reversal of 66252510 is 1525266.

66252510 is a `hidden beast` number, since 6 + 625 + 25 + 10 = 666.

It is an interprime number because it is at equal distance from previous prime (66252503) and next prime (66252517).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66252517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 76339 + ... + 77201.

It is an arithmetic number, because the mean of its divisors is an integer number (3597048).

Almost surely, 2^66252510 is an apocalyptic number.

66252510 is an abundant number, since it is smaller than the sum of its proper divisors (106405794).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66252510 is a wasteful number, since it uses less digits than its factorization.

66252510 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1729 (or 1726 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 66252510 is about 8139.5644846638. The cubic root of 66252510 is about 404.6387267537.

Adding to 66252510 its reverse (1525266), we get a palindrome (67777776).

The spelling of 66252510 in words is "sixty-six million, two hundred fifty-two thousand, five hundred ten".