58666421 has 4 divisors (see below), whose sum is σ = 63999744. Its totient is φ = 53333100.

The previous prime is 58666417. The next prime is 58666429. The reversal of 58666421 is 12466685.

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 58666421 - 2² = 58666417 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 (58666429) 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, 2666645 + ... + 2666666.

It is an arithmetic number, because the mean of its divisors is an integer number (15999936).

Almost surely, 2^58666421 is an apocalyptic number.

It is an amenable number.

58666421 is a deficient number, since it is larger than the sum of its proper divisors (5333323).

58666421 is a wasteful number, since it uses less digits than its factorization.

58666421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5333322.

The product of its digits is 69120, while the sum is 38.

The square root of 58666421 is about 7659.4008251299. The cubic root of 58666421 is about 388.5645698439.

It can be divided in two parts, 586664 and 21, that added together give a palindrome (586685).

The spelling of 58666421 in words is "fifty-eight million, six hundred sixty-six thousand, four hundred twenty-one".