8401687 has 12 divisors (see below), whose sum is σ = 9824520. Its totient is φ = 7163856.

The previous prime is 8401681. The next prime is 8401699. The reversal of 8401687 is 7861048.

It is a happy number.

It is not a de Polignac number, because 8401687 - 2⁷ = 8401559 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8401681) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13264 + ... + 13882.

It is an arithmetic number, because the mean of its divisors is an integer number (818710).

Almost surely, 2^8401687 is an apocalyptic number.

8401687 is a deficient number, since it is larger than the sum of its proper divisors (1422833).

8401687 is a wasteful number, since it uses less digits than its factorization.

8401687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 910 (or 903 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 34.

The square root of 8401687 is about 2898.5663697766. The cubic root of 8401687 is about 203.2928788700.

The spelling of 8401687 in words is "eight million, four hundred one thousand, six hundred eighty-seven".