80657408 has 88 divisors (see below), whose sum is σ = 178138128. Its totient is φ = 36274176.

The previous prime is 80657399. The next prime is 80657411. The reversal of 80657408 is 80475608.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 971735 + ... + 971817.

Almost surely, 2^80657408 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 80657408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89069064).

80657408 is an abundant number, since it is smaller than the sum of its proper divisors (97480720).

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

80657408 is a wasteful number, since it uses less digits than its factorization.

80657408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189 (or 171 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 38.

The square root of 80657408 is about 8980.9469433908. The cubic root of 80657408 is about 432.0640051484.

The spelling of 80657408 in words is "eighty million, six hundred fifty-seven thousand, four hundred eight".