64450940 has 12 divisors (see below), whose sum is σ = 135347016. Its totient is φ = 25780368.

The previous prime is 64450933. The next prime is 64450943. The reversal of 64450940 is 4905446.

It is a happy number.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 64450897 and 64450906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64450943) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1611254 + ... + 1611293.

It is an arithmetic number, because the mean of its divisors is an integer number (11278918).

Almost surely, 2^64450940 is an apocalyptic number.

It is an amenable number.

64450940 is an abundant number, since it is smaller than the sum of its proper divisors (70896076).

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

64450940 is a wasteful number, since it uses less digits than its factorization.

64450940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3222556 (or 3222554 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 64450940 is about 8028.1342788969. The cubic root of 64450940 is about 400.9372604750.

The spelling of 64450940 in words is "sixty-four million, four hundred fifty thousand, nine hundred forty".