64323340 has 24 divisors (see below), whose sum is σ = 136710000. Its totient is φ = 25418688.

The previous prime is 64323331. The next prime is 64323349. The reversal of 64323340 is 4332346.

It is an interprime number because it is at equal distance from previous prime (64323331) and next prime (64323349).

It is not an unprimeable number, because it can be changed into a prime (64323349) 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, 17715 + ... + 21034.

It is an arithmetic number, because the mean of its divisors is an integer number (5696250).

Almost surely, 2^64323340 is an apocalyptic number.

It is an amenable number.

64323340 is an abundant number, since it is smaller than the sum of its proper divisors (72386660).

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

64323340 is a wasteful number, since it uses less digits than its factorization.

64323340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38841 (or 38839 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 25.

The square root of 64323340 is about 8020.1832896761. The cubic root of 64323340 is about 400.6724937468.

Adding to 64323340 its reverse (4332346), we get a palindrome (68655686).

The spelling of 64323340 in words is "sixty-four million, three hundred twenty-three thousand, three hundred forty".