80647398 has 48 divisors (see below), whose sum is σ = 189994896. Its totient is φ = 24575040.

The previous prime is 80647393. The next prime is 80647417. The reversal of 80647398 is 89374608.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80647393) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23428 + ... + 26648.

It is an arithmetic number, because the mean of its divisors is an integer number (3958227).

Almost surely, 2^80647398 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 80647398, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (94997448).

80647398 is an abundant number, since it is smaller than the sum of its proper divisors (109347498).

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

80647398 is a wasteful number, since it uses less digits than its factorization.

80647398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3349 (or 3346 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The square root of 80647398 is about 8980.3896351996. The cubic root of 80647398 is about 432.0461306191.

The spelling of 80647398 in words is "eighty million, six hundred forty-seven thousand, three hundred ninety-eight".