81674076 has 48 divisors (see below), whose sum is σ = 208551168. Its totient is φ = 24672000.

The previous prime is 81674053. The next prime is 81674077. The reversal of 81674076 is 67047618.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81674077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52161 + ... + 53703.

It is an arithmetic number, because the mean of its divisors is an integer number (4344816).

Almost surely, 2^81674076 is an apocalyptic number.

It is an amenable number.

81674076 is an abundant number, since it is smaller than the sum of its proper divisors (126877092).

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

81674076 is a wasteful number, since it uses less digits than its factorization.

81674076 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1962 (or 1960 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 39.

The square root of 81674076 is about 9037.3710779186. The cubic root of 81674076 is about 433.8717864025.

The spelling of 81674076 in words is "eighty-one million, six hundred seventy-four thousand, seventy-six".