8651616 has 24 divisors (see below), whose sum is σ = 22710744. Its totient is φ = 2883840.

The previous prime is 8651609. The next prime is 8651627. The reversal of 8651616 is 6161568.

It is a tau number, because it is divible by the number of its divisors (24).

It is a super-2 number, since 2×8651616² = 149700918822912, which contains 22 as substring.

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, 44965 + ... + 45156.

It is an arithmetic number, because the mean of its divisors is an integer number (946281).

Almost surely, 2^8651616 is an apocalyptic number.

It is an amenable number.

8651616 is an abundant number, since it is smaller than the sum of its proper divisors (14059128).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8651616 is a wasteful number, since it uses less digits than its factorization.

8651616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90134 (or 90126 counting only the distinct ones).

The product of its digits is 8640, while the sum is 33.

The square root of 8651616 is about 2941.3629493825. The cubic root of 8651616 is about 205.2890311273.

The spelling of 8651616 in words is "eight million, six hundred fifty-one thousand, six hundred sixteen".