8406693 has 8 divisors (see below), whose sum is σ = 12454400. Its totient is φ = 5604444.

The previous prime is 8406689. The next prime is 8406719. The reversal of 8406693 is 3966048.

It is not a de Polignac number, because 8406693 - 2² = 8406689 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 (8406193) 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, 155653 + ... + 155706.

It is an arithmetic number, because the mean of its divisors is an integer number (1556800).

Almost surely, 2^8406693 is an apocalyptic number.

It is an amenable number.

8406693 is a deficient number, since it is larger than the sum of its proper divisors (4047707).

8406693 is a wasteful number, since it uses less digits than its factorization.

8406693 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 311368 (or 311362 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 8406693 is about 2899.4297715240. The cubic root of 8406693 is about 203.3332470363. Note that the first 3 decimals are identical.

The spelling of 8406693 in words is "eight million, four hundred six thousand, six hundred ninety-three".