64121350 has 12 divisors (see below), whose sum is σ = 119265804. Its totient is φ = 25648520.

The previous prime is 64121347. The next prime is 64121353. The reversal of 64121350 is 5312146.

It is an interprime number because it is at equal distance from previous prime (64121347) and next prime (64121353).

It is a super-2 number, since 2×64121350² = 8223095051645000, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64121353) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 641164 + ... + 641263.

It is an arithmetic number, because the mean of its divisors is an integer number (9938817).

Almost surely, 2^64121350 is an apocalyptic number.

64121350 is a deficient number, since it is larger than the sum of its proper divisors (55144454).

64121350 is a wasteful number, since it uses less digits than its factorization.

64121350 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1282439 (or 1282434 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 64121350 is about 8007.5807832328. The cubic root of 64121350 is about 400.2526528827.

Adding to 64121350 its reverse (5312146), we get a palindrome (69433496).

The spelling of 64121350 in words is "sixty-four million, one hundred twenty-one thousand, three hundred fifty".