66276394 has 16 divisors (see below), whose sum is σ = 101547432. Its totient is φ = 32430528.

The previous prime is 66276359. The next prime is 66276401. The reversal of 66276394 is 49367266.

It can be written as a sum of positive squares in 4 ways, for example, as 62805625 + 3470769 = 7925^2 + 1863^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 66276394.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77272 + ... + 78124.

Almost surely, 2^66276394 is an apocalyptic number.

66276394 is a deficient number, since it is larger than the sum of its proper divisors (35271038).

66276394 is a wasteful number, since it uses less digits than its factorization.

66276394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1641.

The product of its digits is 326592, while the sum is 43.

The square root of 66276394 is about 8141.0315071249. The cubic root of 66276394 is about 404.6873449381.

The spelling of 66276394 in words is "sixty-six million, two hundred seventy-six thousand, three hundred ninety-four".