60661505 has 4 divisors (see below), whose sum is σ = 72793812. Its totient is φ = 48529200.

The previous prime is 60661501. The next prime is 60661507. The reversal of 60661505 is 50516606.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 18722929 + 41938576 = 4327^2 + 6476^2 .

It is not a de Polignac number, because 60661505 - 2² = 60661501 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (60661501) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6066146 + ... + 6066155.

It is an arithmetic number, because the mean of its divisors is an integer number (18198453).

Almost surely, 2^60661505 is an apocalyptic number.

It is an amenable number.

60661505 is a deficient number, since it is larger than the sum of its proper divisors (12132307).

60661505 is a wasteful number, since it uses less digits than its factorization.

60661505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12132306.

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 60661505 is about 7788.5496082390. The cubic root of 60661505 is about 392.9202336454.

The spelling of 60661505 in words is "sixty million, six hundred sixty-one thousand, five hundred five".