80491764 has 24 divisors (see below), whose sum is σ = 189753088. Its totient is φ = 26553600.

The previous prime is 80491759. The next prime is 80491769. The reversal of 80491764 is 46719408.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (80491759) and next prime (80491769).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80491769) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33412 + ... + 35739.

Almost surely, 2^80491764 is an apocalyptic number.

It is an amenable number.

80491764 is an abundant number, since it is smaller than the sum of its proper divisors (109261324).

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

80491764 is a wasteful number, since it uses less digits than its factorization.

80491764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69255 (or 69253 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 39.

The square root of 80491764 is about 8971.7202363872. The cubic root of 80491764 is about 431.7680296110.

The spelling of 80491764 in words is "eighty million, four hundred ninety-one thousand, seven hundred sixty-four".