66276772 has 12 divisors (see below), whose sum is σ = 116043676. Its totient is φ = 33121440.

The previous prime is 66276757. The next prime is 66276781. The reversal of 66276772 is 27767266.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 41912676 + 24364096 = 6474^2 + 4936^2 .

It is a super-2 number, since 2×66276772² = 8785221013479968, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9538 + ... + 14950.

Almost surely, 2^66276772 is an apocalyptic number.

It is an amenable number.

66276772 is a deficient number, since it is larger than the sum of its proper divisors (49766904).

66276772 is a wasteful number, since it uses less digits than its factorization.

66276772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8478 (or 8476 counting only the distinct ones).

The product of its digits is 296352, while the sum is 43.

The square root of 66276772 is about 8141.0547228231. The cubic root of 66276772 is about 404.6881142997.

The spelling of 66276772 in words is "sixty-six million, two hundred seventy-six thousand, seven hundred seventy-two".