64322040 has 32 divisors (see below), whose sum is σ = 192966480. Its totient is φ = 17152512.

The previous prime is 64321987. The next prime is 64322057. The reversal of 64322040 is 4022346.

It is a junction number, because it is equal to n+sod(n) for n = 64321998 and 64322016.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 267889 + ... + 268128.

Almost surely, 2^64322040 is an apocalyptic number.

64322040 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

64322040 is an abundant number, since it is smaller than the sum of its proper divisors (128644440).

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

64322040 is a wasteful number, since it uses less digits than its factorization.

64322040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 536031 (or 536027 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 64322040 is about 8020.1022437373. The cubic root of 64322040 is about 400.6697944790.

Adding to 64322040 its reverse (4022346), we get a palindrome (68344386).

The spelling of 64322040 in words is "sixty-four million, three hundred twenty-two thousand, forty".