60099561 has 6 divisors (see below), whose sum is σ = 86810490. Its totient is φ = 40066368.

The previous prime is 60099521. The next prime is 60099577. The reversal of 60099561 is 16599006.

60099561 is a `hidden beast` number, since 6 + 0 + 0 + 99 + 561 = 666.

It can be written as a sum of positive squares in only one way, i.e., 58293225 + 1806336 = 7635^2 + 1344^2 .

It is not a de Polignac number, because 60099561 - 2⁶ = 60099497 is a prime.

It is a super-2 number, since 2×60099561² = 7223914464785442, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (60099521) 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, 3338856 + ... + 3338873.

It is an arithmetic number, because the mean of its divisors is an integer number (14468415).

Almost surely, 2^60099561 is an apocalyptic number.

It is an amenable number.

60099561 is a deficient number, since it is larger than the sum of its proper divisors (26710929).

60099561 is a wasteful number, since it uses less digits than its factorization.

60099561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6677735 (or 6677732 counting only the distinct ones).

The product of its (nonzero) digits is 14580, while the sum is 36.

The square root of 60099561 is about 7752.3906635308. The cubic root of 60099561 is about 391.7031823105.

The spelling of 60099561 in words is "sixty million, ninety-nine thousand, five hundred sixty-one".