64121330 has 64 divisors (see below), whose sum is σ = 146700288. Its totient is φ = 19630080.

The previous prime is 64121329. The next prime is 64121339. The reversal of 64121330 is 3312146.

It is a super-2 number, since 2×64121330² = 8223089921937800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (64121339) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 27074 + ... + 29346.

It is an arithmetic number, because the mean of its divisors is an integer number (2292192).

Almost surely, 2^64121330 is an apocalyptic number.

64121330 is an abundant number, since it is smaller than the sum of its proper divisors (82578958).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64121330 is a wasteful number, since it uses less digits than its factorization.

64121330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2331.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 64121330 is about 8007.5795344161. The cubic root of 64121330 is about 400.2526112686.

Adding to 64121330 its reverse (3312146), we get a palindrome (67433476).

The spelling of 64121330 in words is "sixty-four million, one hundred twenty-one thousand, three hundred thirty".