60721189 has 4 divisors (see below), whose sum is σ = 60766540. Its totient is φ = 60675840.

The previous prime is 60721187. The next prime is 60721201. The reversal of 60721189 is 98112706.

It is a happy number.

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 34281025 + 26440164 = 5855^2 + 5142^2 .

It is a cyclic number.

It is not a de Polignac number, because 60721189 - 2¹ = 60721187 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 (60721187) 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, 20604 + ... + 23365.

It is an arithmetic number, because the mean of its divisors is an integer number (15191635).

Almost surely, 2^60721189 is an apocalyptic number.

It is an amenable number.

60721189 is a deficient number, since it is larger than the sum of its proper divisors (45351).

60721189 is a wasteful number, since it uses less digits than its factorization.

60721189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45350.

The product of its (nonzero) digits is 6048, while the sum is 34.

The square root of 60721189 is about 7792.3801883635. The cubic root of 60721189 is about 393.0490543002.

The spelling of 60721189 in words is "sixty million, seven hundred twenty-one thousand, one hundred eighty-nine".