60721217 has 4 divisors (see below), whose sum is σ = 61489920. Its totient is φ = 59952516.

The previous prime is 60721211. The next prime is 60721231. The reversal of 60721217 is 71212706.

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 60721217 - 2⁴ = 60721201 is a prime.

It is a super-2 number, since 2×60721217² = 7374132387922178, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (60721211) 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, 384233 + ... + 384390.

It is an arithmetic number, because the mean of its divisors is an integer number (15372480).

Almost surely, 2^60721217 is an apocalyptic number.

It is an amenable number.

60721217 is a deficient number, since it is larger than the sum of its proper divisors (768703).

60721217 is an equidigital number, since it uses as much as digits as its factorization.

60721217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 768702.

The product of its (nonzero) digits is 1176, while the sum is 26.

The square root of 60721217 is about 7792.3819849902. The cubic root of 60721217 is about 393.0491147150.

The spelling of 60721217 in words is "sixty million, seven hundred twenty-one thousand, two hundred seventeen".