60511990 has 64 divisors (see below), whose sum is σ = 137479680. Its totient is φ = 18627840.

The previous prime is 60511981. The next prime is 60511991. The reversal of 60511990 is 9911506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (60511991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 68089 + ... + 68971.

It is an arithmetic number, because the mean of its divisors is an integer number (2148120).

Almost surely, 2^60511990 is an apocalyptic number.

60511990 is an abundant number, since it is smaller than the sum of its proper divisors (76967690).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

60511990 is a wasteful number, since it uses less digits than its factorization.

60511990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 997.

The product of its (nonzero) digits is 2430, while the sum is 31.

The square root of 60511990 is about 7778.9453012603. The cubic root of 60511990 is about 392.5971523067.

The spelling of 60511990 in words is "sixty million, five hundred eleven thousand, nine hundred ninety".