60990 has 32 divisors (see below), whose sum is σ = 155520. Its totient is φ = 15264.

The previous prime is 60961. The next prime is 61001. The reversal of 60990 is 9906.

It is a self number, because there is not a number n which added to its sum of digits gives 60990.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 517 + ... + 623.

It is an arithmetic number, because the mean of its divisors is an integer number (4860).

2⁶⁰⁹⁹⁰ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 60990, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (77760).

60990 is an abundant number, since it is smaller than the sum of its proper divisors (94530).

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

60990 is a wasteful number, since it uses less digits than its factorization.

60990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136.

The product of its (nonzero) digits is 486, while the sum is 24.

The square root of 60990 is about 246.9615354666. The cubic root of 60990 is about 39.3628206221.

The spelling of 60990 in words is "sixty thousand, nine hundred ninety".