9649816 has 32 divisors (see below), whose sum is σ = 20120400. Its totient is φ = 4301440.

The previous prime is 9649799. The next prime is 9649819. The reversal of 9649816 is 6189469.

9649816 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a nialpdrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9649819) 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, 3630 + ... + 5698.

Almost surely, 2^9649816 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9649816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10060200).

9649816 is an abundant number, since it is smaller than the sum of its proper divisors (10470584).

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

9649816 is a wasteful number, since it uses less digits than its factorization.

9649816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2139 (or 2135 counting only the distinct ones).

The product of its digits is 93312, while the sum is 43.

The square root of 9649816 is about 3106.4152974128. The cubic root of 9649816 is about 212.8987006098.

The spelling of 9649816 in words is "nine million, six hundred forty-nine thousand, eight hundred sixteen".