60666505 has 4 divisors (see below), whose sum is σ = 72799812. Its totient is φ = 48533200.

The previous prime is 60666499. The next prime is 60666533. The reversal of 60666505 is 50566606.

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 24810361 + 35856144 = 4981^2 + 5988^2 .

It is not a de Polignac number, because 60666505 - 2³ = 60666497 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6066646 + ... + 6066655.

It is an arithmetic number, because the mean of its divisors is an integer number (18199953).

Almost surely, 2^60666505 is an apocalyptic number.

It is an amenable number.

60666505 is a deficient number, since it is larger than the sum of its proper divisors (12133307).

60666505 is a wasteful number, since it uses less digits than its factorization.

60666505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12133306.

The product of its (nonzero) digits is 32400, while the sum is 34.

The square root of 60666505 is about 7788.8705856498. The cubic root of 60666505 is about 392.9310287793.

The spelling of 60666505 in words is "sixty million, six hundred sixty-six thousand, five hundred five".