287672417 has 4 divisors (see below), whose sum is σ = 291313920. Its totient is φ = 284030916.

The previous prime is 287672387. The next prime is 287672423. The reversal of 287672417 is 714276782.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 287672417 - 2¹⁰ = 287671393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (287672117) 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, 1820633 + ... + 1820790.

It is an arithmetic number, because the mean of its divisors is an integer number (72828480).

Almost surely, 2^287672417 is an apocalyptic number.

It is an amenable number.

287672417 is a deficient number, since it is larger than the sum of its proper divisors (3641503).

287672417 is an equidigital number, since it uses as much as digits as its factorization.

287672417 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3641502.

The product of its digits is 263424, while the sum is 44.

The square root of 287672417 is about 16960.9084957145. The cubic root of 287672417 is about 660.1349716309.

The spelling of 287672417 in words is "two hundred eighty-seven million, six hundred seventy-two thousand, four hundred seventeen".