287679963 has 4 divisors (see below), whose sum is σ = 383573288. Its totient is φ = 191786640.

The previous prime is 287679961. The next prime is 287679979. The reversal of 287679963 is 369976782.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 287679963 - 2¹ = 287679961 is a prime.

It is a super-2 number, since 2×287679963² = 165519522223362738, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (287679961) 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, 47946658 + ... + 47946663.

It is an arithmetic number, because the mean of its divisors is an integer number (95893322).

Almost surely, 2^287679963 is an apocalyptic number.

287679963 is a deficient number, since it is larger than the sum of its proper divisors (95893325).

287679963 is an equidigital number, since it uses as much as digits as its factorization.

287679963 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95893324.

The product of its digits is 6858432, while the sum is 57.

The square root of 287679963 is about 16961.1309469622. The cubic root of 287679963 is about 660.1407436301.

The spelling of 287679963 in words is "two hundred eighty-seven million, six hundred seventy-nine thousand, nine hundred sixty-three".