60721585 has 8 divisors (see below), whose sum is σ = 73685160. Its totient is φ = 48031104.

The previous prime is 60721579. The next prime is 60721589. The reversal of 60721585 is 58512706.

It can be written as a sum of positive squares in 4 ways, for example, as 10764961 + 49956624 = 3281^2 + 7068^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 60721585 - 2⁵ = 60721553 is a prime.

It is a super-2 number, since 2×60721585² = 7374221769824450, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 60721585.

It is not an unprimeable number, because it can be changed into a prime (60721589) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67782 + ... + 68671.

It is an arithmetic number, because the mean of its divisors is an integer number (9210645).

Almost surely, 2^60721585 is an apocalyptic number.

It is an amenable number.

60721585 is a deficient number, since it is larger than the sum of its proper divisors (12963575).

60721585 is a wasteful number, since it uses less digits than its factorization.

60721585 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136547.

The product of its (nonzero) digits is 16800, while the sum is 34.

The square root of 60721585 is about 7792.4055977599. The cubic root of 60721585 is about 393.0499087361.

The spelling of 60721585 in words is "sixty million, seven hundred twenty-one thousand, five hundred eighty-five".