64552340 has 12 divisors (see below), whose sum is σ = 135559956. Its totient is φ = 25820928.

The previous prime is 64552339. The next prime is 64552343. The reversal of 64552340 is 4325546.

It can be written as a sum of positive squares in 2 ways, for example, as 43059844 + 21492496 = 6562^2 + 4636^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64552343) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1613789 + ... + 1613828.

It is an arithmetic number, because the mean of its divisors is an integer number (11296663).

Almost surely, 2^64552340 is an apocalyptic number.

It is an amenable number.

64552340 is an abundant number, since it is smaller than the sum of its proper divisors (71007616).

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

64552340 is a wasteful number, since it uses less digits than its factorization.

64552340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3227626 (or 3227624 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 29.

The square root of 64552340 is about 8034.4470873857. The cubic root of 64552340 is about 401.1474137902.

Adding to 64552340 its reverse (4325546), we get a palindrome (68877886).

The spelling of 64552340 in words is "sixty-four million, five hundred fifty-two thousand, three hundred forty".