80649408 has 112 divisors (see below), whose sum is σ = 254568960. Its totient is φ = 22032384.

The previous prime is 80649407. The next prime is 80649421. The reversal of 80649408 is 80494608.

It is a tau number, because it is divible by the number of its divisors (112).

It is not an unprimeable number, because it can be changed into a prime (80649403) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29608 + ... + 32216.

Almost surely, 2^80649408 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 80649408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (127284480).

80649408 is an abundant number, since it is smaller than the sum of its proper divisors (173919552).

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

80649408 is a wasteful number, since it uses less digits than its factorization.

80649408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2654 (or 2644 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 39.

The square root of 80649408 is about 8980.5015450141. The cubic root of 80649408 is about 432.0497199290.

The spelling of 80649408 in words is "eighty million, six hundred forty-nine thousand, four hundred eight".