60999999 has 16 divisors (see below), whose sum is σ = 82897152. Its totient is φ = 39892608.

The previous prime is 60999959. The next prime is 61000001. The reversal of 60999999 is 99999906.

It is not a de Polignac number, because 60999999 - 2⁷ = 60999871 is a prime.

60999999 is a modest number, since divided by 9999 gives 6099 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (60999919) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34044 + ... + 35790.

It is an arithmetic number, because the mean of its divisors is an integer number (5181072).

Almost surely, 2^60999999 is an apocalyptic number.

60999999 is a deficient number, since it is larger than the sum of its proper divisors (21897153).

60999999 is a wasteful number, since it uses less digits than its factorization.

60999999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1966.

The product of its (nonzero) digits is 3188646, while the sum is 60.

The square root of 60999999 is about 7810.2496118882. The cubic root of 60999999 is about 393.6497161591.

The spelling of 60999999 in words is "sixty million, nine hundred ninety-nine thousand, nine hundred ninety-nine".