66276251 has 16 divisors (see below), whose sum is σ = 72420480. Its totient is φ = 60410880.

The previous prime is 66276239. The next prime is 66276257. The reversal of 66276251 is 15267266.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66276251 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66276257) 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 in 15 ways as a sum of consecutive naturals, for example, 86711 + ... + 87471.

It is an arithmetic number, because the mean of its divisors is an integer number (4526280).

Almost surely, 2^66276251 is an apocalyptic number.

66276251 is a deficient number, since it is larger than the sum of its proper divisors (6144229).

66276251 is a wasteful number, since it uses less digits than its factorization.

66276251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 934.

The product of its digits is 30240, while the sum is 35.

The square root of 66276251 is about 8141.0227244493. The cubic root of 66276251 is about 404.6870538826.

The spelling of 66276251 in words is "sixty-six million, two hundred seventy-six thousand, two hundred fifty-one".