64260421 has 8 divisors (see below), whose sum is σ = 65744640. Its totient is φ = 62781168.

The previous prime is 64260401. The next prime is 64260439. The reversal of 64260421 is 12406246.

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 64260421 - 2¹⁷ = 64129349 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 (64260401) 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, 40440 + ... + 41998.

It is an arithmetic number, because the mean of its divisors is an integer number (8218080).

Almost surely, 2^64260421 is an apocalyptic number.

It is an amenable number.

64260421 is a deficient number, since it is larger than the sum of its proper divisors (1484219).

64260421 is a wasteful number, since it uses less digits than its factorization.

64260421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2483.

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 64260421 is about 8016.2597887045. The cubic root of 64260421 is about 400.5418095247.

Adding to 64260421 its reverse (12406246), we get a palindrome (76666667).

The spelling of 64260421 in words is "sixty-four million, two hundred sixty thousand, four hundred twenty-one".