104640487 has 8 divisors (see below), whose sum is σ = 122506272. Its totient is φ = 87504000.

The previous prime is 104640461. The next prime is 104640493. The reversal of 104640487 is 784046401.

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 104640487 - 2¹¹ = 104638439 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (104640427) 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, 182014 + ... + 182587.

It is an arithmetic number, because the mean of its divisors is an integer number (15313284).

Almost surely, 2^104640487 is an apocalyptic number.

104640487 is a deficient number, since it is larger than the sum of its proper divisors (17865785).

104640487 is an equidigital number, since it uses as much as digits as its factorization.

104640487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 364649.

The product of its (nonzero) digits is 21504, while the sum is 34.

The square root of 104640487 is about 10229.3932860165. The cubic root of 104640487 is about 471.2303466816.

Adding to 104640487 its reverse (784046401), we get a palindrome (888686888).

The spelling of 104640487 in words is "one hundred four million, six hundred forty thousand, four hundred eighty-seven".