81477002 has 8 divisors (see below), whose sum is σ = 125057856. Its totient is φ = 39791052.

The previous prime is 81476999. The next prime is 81477007. The reversal of 81477002 is 20077418.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (81477007) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 473618 + ... + 473789.

It is an arithmetic number, because the mean of its divisors is an integer number (15632232).

Almost surely, 2^81477002 is an apocalyptic number.

81477002 is a deficient number, since it is larger than the sum of its proper divisors (43580854).

81477002 is a wasteful number, since it uses less digits than its factorization.

81477002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 947452.

The product of its (nonzero) digits is 3136, while the sum is 29.

The square root of 81477002 is about 9026.4612113497. The cubic root of 81477002 is about 433.5225376264.

The spelling of 81477002 in words is "eighty-one million, four hundred seventy-seven thousand, two".