81035977 has 8 divisors (see below), whose sum is σ = 88470720. Its totient is φ = 73612560.

The previous prime is 81035959. The next prime is 81035987. The reversal of 81035977 is 77953018.

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

It is a cyclic number.

It is not a de Polignac number, because 81035977 - 2¹¹ = 81033929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (81035917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20623 + ... + 24235.

It is an arithmetic number, because the mean of its divisors is an integer number (11058840).

Almost surely, 2^81035977 is an apocalyptic number.

It is an amenable number.

81035977 is a deficient number, since it is larger than the sum of its proper divisors (7434743).

81035977 is a wasteful number, since it uses less digits than its factorization.

81035977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5663.

The product of its (nonzero) digits is 52920, while the sum is 40.

The square root of 81035977 is about 9001.9985003331. The cubic root of 81035977 is about 432.7389206385.

The spelling of 81035977 in words is "eighty-one million, thirty-five thousand, nine hundred seventy-seven".