81676622 has 8 divisors (see below), whose sum is σ = 122588856. Its totient is φ = 40813672.

The previous prime is 81676603. The next prime is 81676627. The reversal of 81676622 is 22667618.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81676627) 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, 7853 + ... + 15000.

It is an arithmetic number, because the mean of its divisors is an integer number (15323607).

Almost surely, 2^81676622 is an apocalyptic number.

81676622 is a deficient number, since it is larger than the sum of its proper divisors (40912234).

81676622 is a wasteful number, since it uses less digits than its factorization.

81676622 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24642.

The product of its digits is 48384, while the sum is 38.

The square root of 81676622 is about 9037.5119363683. The cubic root of 81676622 is about 433.8762946714.

The spelling of 81676622 in words is "eighty-one million, six hundred seventy-six thousand, six hundred twenty-two".