81062622 has 12 divisors (see below), whose sum is σ = 175635720. Its totient is φ = 27020868.

The previous prime is 81062621. The next prime is 81062623. The reversal of 81062622 is 22626018.

81062622 is a `hidden beast` number, since 8 + 10 + 626 + 22 = 666.

It is an interprime number because it is at equal distance from previous prime (81062621) and next prime (81062623).

It is a super-2 number, since 2×81062622² = 13142297371029768, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81062621) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2251722 + ... + 2251757.

It is an arithmetic number, because the mean of its divisors is an integer number (14636310).

Almost surely, 2^81062622 is an apocalyptic number.

81062622 is an abundant number, since it is smaller than the sum of its proper divisors (94573098).

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

81062622 is a wasteful number, since it uses less digits than its factorization.

81062622 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4503487 (or 4503484 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 81062622 is about 9003.4783278464. The cubic root of 81062622 is about 432.7863442869.

The spelling of 81062622 in words is "eighty-one million, sixty-two thousand, six hundred twenty-two".