81710601 has 8 divisors (see below), whose sum is σ = 124511424. Its totient is φ = 46691760.

The previous prime is 81710593. The next prime is 81710609. The reversal of 81710601 is 10601718.

It is an interprime number because it is at equal distance from previous prime (81710593) and next prime (81710609).

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

It is not a de Polignac number, because 81710601 - 2³ = 81710593 is a prime.

It is not an unprimeable number, because it can be changed into a prime (81710609) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1945470 + ... + 1945511.

It is an arithmetic number, because the mean of its divisors is an integer number (15563928).

Almost surely, 2^81710601 is an apocalyptic number.

It is an amenable number.

81710601 is a deficient number, since it is larger than the sum of its proper divisors (42800823).

81710601 is a wasteful number, since it uses less digits than its factorization.

81710601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3890991.

The product of its (nonzero) digits is 336, while the sum is 24.

The square root of 81710601 is about 9039.3916277590. The cubic root of 81710601 is about 433.9364532101.

The spelling of 81710601 in words is "eighty-one million, seven hundred ten thousand, six hundred one".