66762274 has 8 divisors (see below), whose sum is σ = 100464300. Its totient is φ = 33274176.

The previous prime is 66762271. The next prime is 66762277. The reversal of 66762274 is 47226766.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (66762271) and next prime (66762277).

It can be written as a sum of positive squares in 2 ways, for example, as 66536649 + 225625 = 8157^2 + 475^2 .

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

It is not an unprimeable number, because it can be changed into a prime (66762271) 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, 52699 + ... + 53950.

Almost surely, 2^66762274 is an apocalyptic number.

66762274 is a deficient number, since it is larger than the sum of its proper divisors (33702026).

66762274 is a wasteful number, since it uses less digits than its factorization.

66762274 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106964.

The product of its digits is 169344, while the sum is 40.

The square root of 66762274 is about 8170.8184412579. The cubic root of 66762274 is about 405.6738748232.

The spelling of 66762274 in words is "sixty-six million, seven hundred sixty-two thousand, two hundred seventy-four".