80637381 has 24 divisors (see below), whose sum is σ = 128972064. Its totient is φ = 48137760.

The previous prime is 80637367. The next prime is 80637391. The reversal of 80637381 is 18373608.

It is not a de Polignac number, because 80637381 - 2⁶ = 80637317 is a prime.

It is a super-2 number, since 2×80637381² = 13004774429078322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80637301) 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, 555 + ... + 12711.

It is an arithmetic number, because the mean of its divisors is an integer number (5373836).

Almost surely, 2^80637381 is an apocalyptic number.

It is an amenable number.

80637381 is a deficient number, since it is larger than the sum of its proper divisors (48334683).

80637381 is a wasteful number, since it uses less digits than its factorization.

80637381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12241 (or 12238 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 80637381 is about 8979.8319026583. The cubic root of 80637381 is about 432.0282421094.

It can be divided in two parts, 80637 and 381, that added together give a palindrome (81018).

The spelling of 80637381 in words is "eighty million, six hundred thirty-seven thousand, three hundred eighty-one".