60664021 has 8 divisors (see below), whose sum is σ = 67017600. Its totient is φ = 54450240.

The previous prime is 60664001. The next prime is 60664039. The reversal of 60664021 is 12046606.

It is a happy number.

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 60664021 - 2⁷ = 60663893 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 (60664001) 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, 34036 + ... + 35773.

It is an arithmetic number, because the mean of its divisors is an integer number (8377200).

Almost surely, 2^60664021 is an apocalyptic number.

It is an amenable number.

60664021 is a deficient number, since it is larger than the sum of its proper divisors (6353579).

60664021 is a wasteful number, since it uses less digits than its factorization.

60664021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69899.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 60664021 is about 7788.7111257255. The cubic root of 60664021 is about 392.9256658309.

The spelling of 60664021 in words is "sixty million, six hundred sixty-four thousand, twenty-one".