277990066 has 8 divisors (see below), whose sum is σ = 420882480. Its totient is φ = 137695908.

The previous prime is 277990061. The next prime is 277990087. The reversal of 277990066 is 660099772.

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

It is a junction number, because it is equal to n+sod(n) for n = 277989998 and 277990025.

It is not an unprimeable number, because it can be changed into a prime (277990061) 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, 649296 + ... + 649723.

It is an arithmetic number, because the mean of its divisors is an integer number (52610310).

Almost surely, 2^277990066 is an apocalyptic number.

277990066 is a deficient number, since it is larger than the sum of its proper divisors (142892414).

277990066 is a wasteful number, since it uses less digits than its factorization.

277990066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1299128.

The product of its (nonzero) digits is 285768, while the sum is 46.

The square root of 277990066 is about 16673.0340970083. The cubic root of 277990066 is about 652.6441139283.

The spelling of 277990066 in words is "two hundred seventy-seven million, nine hundred ninety thousand, sixty-six".