689285087 has 8 divisors (see below), whose sum is σ = 704223936. Its totient is φ = 674417952.

The previous prime is 689285083. The next prime is 689285101. The reversal of 689285087 is 780582986.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 689285087 - 2² = 689285083 is a prime.

It is a super-2 number, since 2×689285087² = 950227862321195138, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (53).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (689285083) 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, 1733 + ... + 37169.

It is an arithmetic number, because the mean of its divisors is an integer number (88027992).

Almost surely, 2^689285087 is an apocalyptic number.

689285087 is a deficient number, since it is larger than the sum of its proper divisors (14938849).

689285087 is a wasteful number, since it uses less digits than its factorization.

689285087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35857.

The product of its (nonzero) digits is 1935360, while the sum is 53.

The square root of 689285087 is about 26254.2394100458. The cubic root of 689285087 is about 883.3502998838.

The spelling of 689285087 in words is "six hundred eighty-nine million, two hundred eighty-five thousand, eighty-seven".