287346066 has 16 divisors (see below), whose sum is σ = 656791104. Its totient is φ = 82098864.

The previous prime is 287346041. The next prime is 287346067. The reversal of 287346066 is 660643782.

It is a Harshad number since it is a multiple of its sum of digits (42), and also a Moran number because the ratio is a prime number: 6841573 = 287346066 / (2 + 8 + 7 + 3 + 4 + 6 + 0 + 6 + 6).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (287346067) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3420745 + ... + 3420828.

It is an arithmetic number, because the mean of its divisors is an integer number (41049444).

Almost surely, 2^287346066 is an apocalyptic number.

287346066 is an abundant number, since it is smaller than the sum of its proper divisors (369445038).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

287346066 is a wasteful number, since it uses less digits than its factorization.

287346066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6841585.

The product of its (nonzero) digits is 290304, while the sum is 42.

The square root of 287346066 is about 16951.2850840283. The cubic root of 287346066 is about 659.8852463484.

The spelling of 287346066 in words is "two hundred eighty-seven million, three hundred forty-six thousand, sixty-six".