60432721 has 4 divisors (see below), whose sum is σ = 60719344. Its totient is φ = 60146100.

The previous prime is 60432719. The next prime is 60432769. The reversal of 60432721 is 12723406.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 60432721 - 2¹ = 60432719 is a prime.

It is a super-2 number, since 2×60432721² = 7304227534927682, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (60432221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 142995 + ... + 143416.

It is an arithmetic number, because the mean of its divisors is an integer number (15179836).

Almost surely, 2^60432721 is an apocalyptic number.

It is an amenable number.

60432721 is a deficient number, since it is larger than the sum of its proper divisors (286623).

60432721 is a wasteful number, since it uses less digits than its factorization.

60432721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 286622.

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 60432721 is about 7773.8485320979. The cubic root of 60432721 is about 392.4256469975.

The spelling of 60432721 in words is "sixty million, four hundred thirty-two thousand, seven hundred twenty-one".