60661279 has 4 divisors (see below), whose sum is σ = 69327184. Its totient is φ = 51995376.

The previous prime is 60661273. The next prime is 60661303. The reversal of 60661279 is 97216606.

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

It is a cyclic number.

It is not a de Polignac number, because 60661279 - 2²¹ = 58564127 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (60661273) 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 3 ways as a sum of consecutive naturals, for example, 4332942 + ... + 4332955.

It is an arithmetic number, because the mean of its divisors is an integer number (17331796).

Almost surely, 2^60661279 is an apocalyptic number.

60661279 is a deficient number, since it is larger than the sum of its proper divisors (8665905).

60661279 is an equidigital number, since it uses as much as digits as its factorization.

60661279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8665904.

The product of its (nonzero) digits is 27216, while the sum is 37.

The square root of 60661279 is about 7788.5350997476. The cubic root of 60661279 is about 392.9197456914.

The spelling of 60661279 in words is "sixty million, six hundred sixty-one thousand, two hundred seventy-nine".