287630797 has 4 divisors (see below), whose sum is σ = 302769280. Its totient is φ = 272492316.

The previous prime is 287630789. The next prime is 287630807. The reversal of 287630797 is 797036782.

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 287630797 - 2³ = 287630789 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 287630797.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (287630767) 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, 7569213 + ... + 7569250.

It is an arithmetic number, because the mean of its divisors is an integer number (75692320).

Almost surely, 2^287630797 is an apocalyptic number.

It is an amenable number.

287630797 is a deficient number, since it is larger than the sum of its proper divisors (15138483).

287630797 is a wasteful number, since it uses less digits than its factorization.

287630797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15138482.

The product of its (nonzero) digits is 889056, while the sum is 49.

The square root of 287630797 is about 16959.6815123398. The cubic root of 287630797 is about 660.1031343268.

The spelling of 287630797 in words is "two hundred eighty-seven million, six hundred thirty thousand, seven hundred ninety-seven".