287072069 has 2 divisors, whose sum is σ = 287072070. Its totient is φ = 287072068.

The previous prime is 287072057. The next prime is 287072089. The reversal of 287072069 is 960270782.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 258019969 + 29052100 = 16063^2 + 5390^2 .

It is a cyclic number.

It is not a de Polignac number, because 287072069 - 2⁴ = 287072053 is a prime.

It is a super-2 number, since 2×287072069² = 164820745599881522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (287072029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 143536034 + 143536035.

It is an arithmetic number, because the mean of its divisors is an integer number (143536035).

Almost surely, 2^287072069 is an apocalyptic number.

It is an amenable number.

287072069 is a deficient number, since it is larger than the sum of its proper divisors (1).

287072069 is an equidigital number, since it uses as much as digits as its factorization.

287072069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 84672, while the sum is 41.

The square root of 287072069 is about 16943.2012618631. The cubic root of 287072069 is about 659.6754365306.

The spelling of 287072069 in words is "two hundred eighty-seven million, seventy-two thousand, sixty-nine".