64106421 has 8 divisors (see below), whose sum is σ = 87463200. Its totient is φ = 41743632.

The previous prime is 64106407. The next prime is 64106423. The reversal of 64106421 is 12460146.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 64106421 - 2⁷ = 64106293 is a prime.

It is a super-3 number, since 3×64106421³ (a number of 24 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 64106391 and 64106400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64106423) 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, 248346 + ... + 248603.

It is an arithmetic number, because the mean of its divisors is an integer number (10932900).

Almost surely, 2^64106421 is an apocalyptic number.

It is an amenable number.

64106421 is a deficient number, since it is larger than the sum of its proper divisors (23356779).

64106421 is a wasteful number, since it uses less digits than its factorization.

64106421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 496995.

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 64106421 is about 8006.6485497991. The cubic root of 64106421 is about 400.2215876413.

Adding to 64106421 its reverse (12460146), we get a palindrome (76566567).

The spelling of 64106421 in words is "sixty-four million, one hundred six thousand, four hundred twenty-one".