80836644 has 24 divisors (see below), whose sum is σ = 215564608. Its totient is φ = 23096160.

The previous prime is 80836597. The next prime is 80836669. The reversal of 80836644 is 44663808.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

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, 481087 + ... + 481254.

Almost surely, 2^80836644 is an apocalyptic number.

80836644 is a gapful number since it is divisible by the number (84) formed by its first and last digit.

It is an amenable number.

80836644 is an abundant number, since it is smaller than the sum of its proper divisors (134727964).

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

80836644 is a wasteful number, since it uses less digits than its factorization.

80836644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 962355 (or 962353 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 39.

The square root of 80836644 is about 8990.9200863983. The cubic root of 80836644 is about 432.3838109935.

The spelling of 80836644 in words is "eighty million, eight hundred thirty-six thousand, six hundred forty-four".