8461664 has 24 divisors (see below), whose sum is σ = 16737840. Its totient is φ = 4210816.

The previous prime is 8461657. The next prime is 8461693. The reversal of 8461664 is 4661648.

8461664 = T₁₀₄ + T₁₀₅ + ... + T₃₇₂.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8117 + ... + 9099.

It is an arithmetic number, because the mean of its divisors is an integer number (697410).

Almost surely, 2^8461664 is an apocalyptic number.

It is an amenable number.

8461664 is a deficient number, since it is larger than the sum of its proper divisors (8276176).

8461664 is a wasteful number, since it uses less digits than its factorization.

With its successor (8461665) it forms a Ruth-Aaron pair, since the sum of their distinct prime factors is the same (1254).

With its successor (8461665) it forms an eRAP, since the sums of their prime factors are consecutive (1262 and 1263).

8461664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1262 (or 1254 counting only the distinct ones).

The product of its digits is 27648, while the sum is 35.

The square root of 8461664 is about 2908.8939478778. The cubic root of 8461664 is about 203.7754802716.

The spelling of 8461664 in words is "eight million, four hundred sixty-one thousand, six hundred sixty-four".