80602561 has 8 divisors (see below), whose sum is σ = 87572520. Its totient is φ = 73742592.

The previous prime is 80602553. The next prime is 80602567. The reversal of 80602561 is 16520608.

It can be written as a sum of positive squares in 4 ways, for example, as 10042561 + 70560000 = 3169^2 + 8400^2 .

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 80602561 - 2³ = 80602553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80602567) 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, 25966 + ... + 28903.

It is an arithmetic number, because the mean of its divisors is an integer number (10946565).

Almost surely, 2^80602561 is an apocalyptic number.

It is an amenable number.

80602561 is a deficient number, since it is larger than the sum of its proper divisors (6969959).

80602561 is a wasteful number, since it uses less digits than its factorization.

80602561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54995.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 80602561 is about 8977.8929042398. The cubic root of 80602561 is about 431.9660485006.

The spelling of 80602561 in words is "eighty million, six hundred two thousand, five hundred sixty-one".